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Bridgetown 14 Day Long Range Forecast

14 Day weather providing an extended long range forecast outlook for Bridgetown

Roscommon, Ireland

Long range weather outlook for Bridgetown includes 14 day forecast summary:

The next 14 day outlook for Bridgetown shows the average daytime maximum temperature will be around 16°C, with a high for the two weeks of 19°C expected on the afternoon of Sunday 19th. The average minimum temperature will be 9°C, dipping to its lowest on the morning of Friday 24th at 5°C. Expect the following 14 days ahead to have some days seeing a little precipitation and some days with rain. It looks like Tuesday 21st will have the most precipitation with an accumulation of around 13.0mm. On the whole winds are likely to be moderate.

DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityCloud AmountPrecip AmountWeather
Fri 17
May		03:00

NNW
NNW

 12 / 17 kts 53 / 49°F 92%
Low level cloud: 87%
Mid level cloud: 1%
High level cloud: 32%
Most Significant Cloud Type: low
91%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

N
N

 10 / 13 kts 55 / 51°F 88%
Low level cloud: 55%
Mid level cloud: 0%
High level cloud: 19%
Most Significant Cloud Type: low
56%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

N
N

 10 / 11 kts 58 / 55°F 85%
Low level cloud: 62%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: low
62%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

N
N

 10 / 12 kts 65 / 63°F 75%
Low level cloud: 43%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: low
44%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

NNW
NNW

 13 / 15 kts 63 / 61°F 77%
Low level cloud: 25%
Mid level cloud: 18%
High level cloud: 6%
Most Significant Cloud Type: low
31%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

NNW
NNW

 12 / 14 kts 58 / 54°F 85%
Low level cloud: 14%
Mid level cloud: 19%
High level cloud: 8%
Most Significant Cloud Type: low
21%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

NNW
NNW

 10 / 15 kts 52 / 47°F 90%
Low level cloud: 38%
Mid level cloud: 11%
High level cloud: 5%
Most Significant Cloud Type: low
42%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sat 18
May		00:00

NNW
NNW

 10 / 15 kts 51 / 46°F 89%
Low level cloud: 31%
Mid level cloud: 15%
High level cloud: 0%
Most Significant Cloud Type: low
36%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

NNW
NNW

 9 / 14 kts 51 / 46°F 88%
Low level cloud: 22%
Mid level cloud: 20%
High level cloud: 1%
Most Significant Cloud Type: low
29%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

NNW
NNW

 10 / 14 kts 52 / 47°F 87%
Low level cloud: 20%
Mid level cloud: 16%
High level cloud: 33%
Most Significant Cloud Type: low
29%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

N
N

 12 / 13 kts 56 / 52°F 81%
Low level cloud: 76%
Mid level cloud: 2%
High level cloud: 32%
Most Significant Cloud Type: low
80%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

N
N

 11 / 13 kts 60 / 56°F 75%
Low level cloud: 39%
Mid level cloud: 3%
High level cloud: 9%
Most Significant Cloud Type: low
40%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

N
N

 11 / 13 kts 61 / 60°F 71%
Low level cloud: 4%
Mid level cloud: 4%
High level cloud: 18%
Most Significant Cloud Type: low
7%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

NNW
NNW

 10 / 13 kts 55 / 51°F 74%
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 36%
Most Significant Cloud Type: medium
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

NNW
NNW

 6 / 13 kts 46 / 42°F 91%
Low level cloud: 0%
Mid level cloud: 8%
High level cloud: 9%
Most Significant Cloud Type: medium
8%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sun 19
May		00:00

NNW
NNW

 5 / 10 kts 45 / 41°F 95%
Low level cloud: 0%
Mid level cloud: 22%
High level cloud: 10%
Most Significant Cloud Type: medium
23%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

NNW
NNW

 4 / 10 kts 46 / 43°F 96%
Low level cloud: 15%
Mid level cloud: 19%
High level cloud: 34%
Most Significant Cloud Type: low
26%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

NNW
NNW

 4 / 6 kts 52 / 49°F 96%
Low level cloud: 69%
Mid level cloud: 30%
High level cloud: 34%
Most Significant Cloud Type: low
83%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

N
N

 6 / 7 kts 58 / 56°F 85%
Low level cloud: 77%
Mid level cloud: 42%
High level cloud: 32%
Most Significant Cloud Type: low
95%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

N
N

 5 / 6 kts 64 / 63°F 75%
Low level cloud: 74%
Mid level cloud: 23%
High level cloud: 83%
Most Significant Cloud Type: low
91%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

N
N

 6 / 6 kts 66 / 63°F 75%
Low level cloud: 49%
Mid level cloud: 21%
High level cloud: 33%
Most Significant Cloud Type: low
60%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

N
N

 6 / 7 kts 62 / 60°F 82%
Low level cloud: 28%
Mid level cloud: 14%
High level cloud: 18%
Most Significant Cloud Type: low
35%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

N
N

 4 / 8 kts 54 / 50°F 93%
Low level cloud: 46%
Mid level cloud: 10%
High level cloud: 17%
Most Significant Cloud Type: low
51%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Mon 20
May		00:00

NNE
NNE

 3 / 5 kts 53 / 52°F 89%
Low level cloud: 79%
Mid level cloud: 13%
High level cloud: 10%
Most Significant Cloud Type: low
84%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

ESE
ESE

 2 / 4 kts 53 / 54°F 94%
Low level cloud: 81%
Mid level cloud: 46%
High level cloud: 9%
Most Significant Cloud Type: low
98%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

ESE
ESE

 3 / 5 kts 56 / 54°F 94%
Low level cloud: 46%
Mid level cloud: 49%
High level cloud: 6%
Most Significant Cloud Type: low
64%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

ESE
ESE

 5 / 6 kts 59 / 57°F 85%
Low level cloud: 16%
Mid level cloud: 45%
High level cloud: 1%
Most Significant Cloud Type: low
31%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

ESE
ESE

 5 / 6 kts 65 / 64°F 78%
Low level cloud: 87%
Mid level cloud: 29%
High level cloud: 6%
Most Significant Cloud Type: low
97%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

SE
SE

 5 / 8 kts 65 / 65°F 81%
Low level cloud: 89%
Mid level cloud: 43%
High level cloud: 13%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
18:00

SE
SE

 5 / 8 kts 60 / 60°F 92%
Low level cloud: 73%
Mid level cloud: 67%
High level cloud: 32%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
21:00

ESE
ESE

 6 / 9 kts 56 / 55°F 97%
Low level cloud: 83%
Mid level cloud: 82%
High level cloud: 42%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
Tue 21
May		00:00

ESE
ESE

 4 / 6 kts 53 / 52°F 97%
Low level cloud: 88%
Mid level cloud: 77%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
03:00

E
E

 3 / 5 kts 52 / 51°F 96%
Low level cloud: 86%
Mid level cloud: 73%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
06:00

E
E

 2 / 4 kts 52 / 51°F 95%
Low level cloud: 100%
Mid level cloud: 86%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

ESE
ESE

 2 / 3 kts 52 / 52°F 96%
Low level cloud: 100%
Mid level cloud: 80%
High level cloud: 77%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

SW
SW

 1 / 1 kts 53 / 53°F 98%
Low level cloud: 97%
Mid level cloud: 98%
High level cloud: 36%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
15:00

WSW
WSW

 4 / 6 kts 55 / 53°F 97%
Low level cloud: 46%
Mid level cloud: 92%
High level cloud: 43%
Most Significant Cloud Type: low
83%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
18:00

WSW
WSW

 3 / 4 kts 54 / 54°F 93%
Low level cloud: 16%
Mid level cloud: 95%
High level cloud: 38%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

W
W

 2 / 4 kts 53 / 51°F 95%
Low level cloud: 21%
Mid level cloud: 45%
High level cloud: 91%
Most Significant Cloud Type: low
47%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Wed 22
May		00:00

W
W

 1 / 3 kts 47 / 48°F 96%
Low level cloud: 28%
Mid level cloud: 10%
High level cloud: 11%
Most Significant Cloud Type: low
32%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

W
W

 3 / 6 kts 46 / 45°F 97%
Low level cloud: 70%
Mid level cloud: 44%
High level cloud: 5%
Most Significant Cloud Type: low
86%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

WNW
WNW

 3 / 5 kts 52 / 49°F 96%
Low level cloud: 45%
Mid level cloud: 44%
High level cloud: 9%
Most Significant Cloud Type: low
61%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

WNW
WNW

 10 / 13 kts 52 / 48°F 93%
Low level cloud: 96%
Mid level cloud: 44%
High level cloud: 9%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

W
W

 9 / 11 kts 54 / 50°F 79%
Low level cloud: 43%
Mid level cloud: 46%
High level cloud: 6%
Most Significant Cloud Type: low
59%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

NW
NW

 7 / 8 kts 58 / 56°F 69%
Low level cloud: 93%
Mid level cloud: 25%
High level cloud: 3%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

NW
NW

 14 / 20 kts 49 / 43°F 89%
Low level cloud: 75%
Mid level cloud: 54%
High level cloud: 2%
Most Significant Cloud Type: low
94%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

NW
NW

 11 / 17 kts 48 / 42°F 90%
Low level cloud: 93%
Mid level cloud: 21%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Thu 23
May		00:00

NW
NW

 11 / 16 kts 48 / 42°F 91%
Low level cloud: 94%
Mid level cloud: 85%
High level cloud: 9%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

NW
NW

 10 / 15 kts 47 / 41°F 87%
Low level cloud: 81%
Mid level cloud: 66%
High level cloud: 8%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

NW
NW

 8 / 12 kts 48 / 43°F 85%
Low level cloud: 45%
Mid level cloud: 27%
High level cloud: 0%
Most Significant Cloud Type: low
54%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

NNW
NNW

 9 / 11 kts 52 / 47°F 76%
Low level cloud: 62%
Mid level cloud: 20%
High level cloud: 0%
Most Significant Cloud Type: low
68%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

NNW
NNW

 7 / 9 kts 53 / 50°F 72%
Low level cloud: 91%
Mid level cloud: 26%
High level cloud: 0%
Most Significant Cloud Type: low
99%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

NW
NW

 4 / 6 kts 54 / 52°F 71%
Low level cloud: 84%
Mid level cloud: 9%
High level cloud: 19%
Most Significant Cloud Type: low
89%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

NNE
NNE

 2 / 3 kts 54 / 53°F 77%
Low level cloud: 75%
Mid level cloud: 0%
High level cloud: 100%
Most Significant Cloud Type: low
86%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

SSE
SSE

 2 / 5 kts 47 / 46°F 86%
Low level cloud: 2%
Mid level cloud: 0%
High level cloud: 100%
Most Significant Cloud Type: medium
9%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityCloud AmountPrecip AmountWeather
Fri 24
May		00:00

WSW
WSW

 4 / 9 kts 42 / 38°F 94%
Low level cloud: 38%
Mid level cloud: 4%
High level cloud: 19%
Most Significant Cloud Type: low
42%
0.0 In
06:00

WSW
WSW

 3 / 6 kts 44 / 43°F 89%
Low level cloud: 60%
Mid level cloud: 5%
High level cloud: 100%
Most Significant Cloud Type: low
74%
0.0 In
12:00

ESE
ESE

 13 / 24 kts 63 / 62°F 78%
Low level cloud: 90%
Mid level cloud: 22%
High level cloud: 6%
Most Significant Cloud Type: low
98%
0.0 In
18:00

E
E

 3 / 6 kts 64 / 64°F 77%
Low level cloud: 49%
Mid level cloud: 19%
High level cloud: 91%
Most Significant Cloud Type: low
66%
0.0 In
Sat 25
May		00:00

E
E

 4 / 8 kts 53 / 52°F 97%
Low level cloud: 38%
Mid level cloud: 32%
High level cloud: 12%
Most Significant Cloud Type: low
100%
0.0 In
06:00

S
S

 10 / 21 kts 51 / 47°F 93%
Low level cloud: 51%
Mid level cloud: 46%
High level cloud: 100%
Most Significant Cloud Type: low
78%
0.0 In
12:00

ESE
ESE

 12 / 26 kts 66 / 66°F 72%
Low level cloud: 81%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
81%
0.0 In
18:00

SW
SW

 8 / 17 kts 57 / 55°F 98%
Low level cloud: 92%
Mid level cloud: 64%
High level cloud: 2%
Most Significant Cloud Type: low
100%
0.1 In
Sun 26
May		00:00

ENE
ENE

 8 / 18 kts 53 / 50°F 91%
Low level cloud: 7%
Mid level cloud: 13%
High level cloud: 49%
Most Significant Cloud Type: low
18%
0.0 In
06:00

WNW
WNW

 4 / 9 kts 51 / 49°F 92%
Low level cloud: 83%
Mid level cloud: 46%
High level cloud: 19%
Most Significant Cloud Type: low
100%
0.0 In
12:00

E
E

 10 / 21 kts 62 / 62°F 70%
Low level cloud: 16%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: low
32%
0.0 In
18:00

WSW
WSW

 5 / 11 kts 59 / 58°F 73%
Low level cloud: 0%
Mid level cloud: 29%
High level cloud: 2%
Most Significant Cloud Type: medium
29%
0.0 In
Mon 27
May		00:00

NE
NE

 5 / 10 kts 50 / 47°F 89%
Low level cloud: 0%
Mid level cloud: 15%
High level cloud: 0%
Most Significant Cloud Type: medium
15%
0.0 In
06:00

SSW
SSW

 10 / 22 kts 59 / 56°F 91%
Low level cloud: 95%
Mid level cloud: 12%
High level cloud: 0%
Most Significant Cloud Type: low
99%
0.0 In
12:00

ESE
ESE

 6 / 13 kts 63 / 63°F 73%
Low level cloud: 89%
Mid level cloud: 19%
High level cloud: 0%
Most Significant Cloud Type: low
96%
0.0 In
18:00

WNW
WNW

 8 / 18 kts 55 / 52°F 74%
Low level cloud: 15%
Mid level cloud: 43%
High level cloud: 100%
Most Significant Cloud Type: low
42%
0.1 In
Tue 28
May		00:00

ESE
ESE

 5 / 11 kts 50 / 47°F 95%
Low level cloud: 67%
Mid level cloud: 21%
High level cloud: 11%
Most Significant Cloud Type: low
75%
0.1 In
06:00

W
W

 3 / 7 kts 47 / 45°F 88%
Low level cloud: 10%
Mid level cloud: 88%
High level cloud: 0%
Most Significant Cloud Type: medium
100%
0.0 In
12:00

SE
SE

 7 / 16 kts 66 / 66°F 70%
Low level cloud: 90%
Mid level cloud: 12%
High level cloud: 0%
Most Significant Cloud Type: low
94%
0.0 In
18:00

W
W

 12 / 25 kts 50 / 45°F 83%
Low level cloud: 29%
Mid level cloud: 96%
High level cloud: 0%
Most Significant Cloud Type: medium
100%
0.1 In
Wed 29
May		00:00

ESE
ESE

 4 / 9 kts 51 / 49°F 96%
Low level cloud: 34%
Mid level cloud: 43%
High level cloud: 36%
Most Significant Cloud Type: low
53%
0.2 In
06:00

WNW
WNW

 12 / 26 kts 46 / 40°F 89%
Low level cloud: 59%
Mid level cloud: 37%
High level cloud: 0%
Most Significant Cloud Type: low
71%
0.1 In
12:00

SE
SE

 8 / 17 kts 63 / 63°F 71%
Low level cloud: 22%
Mid level cloud: 43%
High level cloud: 100%
Most Significant Cloud Type: low
48%
0.0 In
18:00

WNW
WNW

 10 / 22 kts 53 / 49°F 72%
Low level cloud: 23%
Mid level cloud: 5%
High level cloud: 1%
Most Significant Cloud Type: low
24%
0.1 In
Thu 30
May		00:00

E
E

 4 / 10 kts 53 / 51°F 97%
Low level cloud: 23%
Mid level cloud: 32%
High level cloud: 14%
Most Significant Cloud Type: low
36%
0.1 In
06:00

S
S

 2 / 6 kts 48 / 47°F 87%
Low level cloud: 63%
Mid level cloud: 4%
High level cloud: 100%
Most Significant Cloud Type: low
76%
0.0 In
12:00

ESE
ESE

 6 / 12 kts 68 / 68°F 61%
Low level cloud: 6%
Mid level cloud: 5%
High level cloud: 33%
Most Significant Cloud Type: low
12%
0.0 In
18:00

S
S

 11 / 24 kts 53 / 49°F 94%
Low level cloud: 100%
Mid level cloud: 100%
High level cloud: 79%
Most Significant Cloud Type: low
100%
0.0 In
Fri 31
May		00:00

ESE
ESE

 2 / 6 kts 53 / 53°F 94%
Low level cloud: 2%
Mid level cloud: 14%
High level cloud: 2%
Most Significant Cloud Type: medium
19%
0.1 In
06:00

SW
SW

 7 / 15 kts 54 / 51°F 98%
Low level cloud: 97%
Mid level cloud: 75%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.2 In
12:00

SE
SE

 2 / 5 kts 69 / 69°F 62%
Low level cloud: 10%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
9%
0.0 In
18:00

WSW
WSW

 11 / 24 kts 59 / 56°F 75%
Low level cloud: 3%
Mid level cloud: 21%
High level cloud: 0%
Most Significant Cloud Type: medium
29%
0.1 In
Sat 01
Jun		00:00

NNW
NNW

 3 / 6 kts 52 / 52°F 85%
Low level cloud: 0%
Mid level cloud: 13%
High level cloud: 4%
Most Significant Cloud Type: medium
13%
0.0 In
06:00

SSE
SSE

 7 / 16 kts 45 / 41°F 92%
Low level cloud: 91%
Mid level cloud: 55%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
12:00

NNW
NNW

 8 / 17 kts 66 / 66°F 65%
Low level cloud: 0%
Mid level cloud: 14%
High level cloud: 14%
Most Significant Cloud Type: medium
15%
0.0 In
18:00

SSW
SSW

 6 / 14 kts 52 / 49°F 89%
Low level cloud: 21%
Mid level cloud: 94%
High level cloud: 0%
Most Significant Cloud Type: medium
100%
0.2 In

Other Locations Near to Bridgetown

The day label given represents the local day relative to the local time for the location you are looking at.
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Day

This time is corrected for local time zones and where possible for daylight saving times.
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Local Time

The wind direction we use on this page is the direction the wind is coming from, given in a 16 point compass format.
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Dir

This refers to the sustained average wind speed, normally averaged over a period of 10 minutes for up to 3 hrs.
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Speed/
Gust

Temperature from our forecast perspective are fairly well defined, they are what we would expect to measure in a standard meteorological screen (in other words, shaded and well ventilated) at 2 metres above ground level.
(More Info)

Temp/
Feels Like

The relative humidity is the percent of saturation humidity, generally calculated in relation to saturated vapour density.
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Humidity

The value given is a total predicted for the previous 3 hrs and includes the time of the forecast being looked at.
(More Info)

Precip Amount

The total amount of cloud as a percentage is derived from looking at cloud cover throughout the atmosphere and estimating how these combine when looked at from the ground.
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Cloud Amount

Here we try to capture the feel of the weather as an image – it will never be perfect but is useful for a quick overview.
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Weather

When we measure for forecast air pressure we are normally doing this relative to a certain height and most commonly relative to Mean Sea Level.
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Pressure