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St. John's Weather Forecast

Temperature, wind, rain and more for St. John's

Newfoundland, Canada

DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Wed 17
Sep		06:00

W
W

 7 / 13 mph 46 / 42°F 77% 1021 mb
Low level cloud: 0%
Mid level cloud: 44%
High level cloud: 7%
Most Significant Cloud Type: medium
44%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

WSW
WSW

 10 / 16 mph 50 / 45°F 71% 1021 mb
Low level cloud: 27%
Mid level cloud: 63%
High level cloud: 31%
Most Significant Cloud Type: low
52%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

WSW
WSW

 9 / 14 mph 53 / 50°F 73% 1020 mb
Low level cloud: 1%
Mid level cloud: 87%
High level cloud: 3%
Most Significant Cloud Type: medium
90%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

WSW
WSW

 5 / 7 mph 59 / 58°F 74% 1018 mb
Low level cloud: 4%
Mid level cloud: 79%
High level cloud: 11%
Most Significant Cloud Type: medium
88%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

WSW
WSW

 8 / 13 mph 62 / 60°F 74% 1018 mb
Low level cloud: 10%
Mid level cloud: 43%
High level cloud: 0%
Most Significant Cloud Type: medium
70%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

WSW
WSW

 9 / 15 mph 56 / 53°F 80% 1018 mb
Low level cloud: 23%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: low
38%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Thu 18
Sep		00:00

WSW
WSW

 13 / 26 mph 52 / 48°F 89% 1018 mb
Low level cloud: 8%
Mid level cloud: 26%
High level cloud: 0%
Most Significant Cloud Type: medium
48%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

WSW
WSW

 11 / 23 mph 52 / 48°F 92% 1017 mb
Low level cloud: 15%
Mid level cloud: 4%
High level cloud: 35%
Most Significant Cloud Type: low
20%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

WSW
WSW

 12 / 24 mph 53 / 49°F 91% 1017 mb
Low level cloud: 6%
Mid level cloud: 2%
High level cloud: 84%
Most Significant Cloud Type: medium
23%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

SW
SW

 14 / 26 mph 58 / 55°F 81% 1017 mb
Low level cloud: 1%
Mid level cloud: 1%
High level cloud: 100%
Most Significant Cloud Type: medium
7%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

SW
SW

 15 / 17 mph 73 / 76°F 61% 1015 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 32%
Most Significant Cloud Type: medium
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

SW
SW

 15 / 17 mph 74 / 77°F 56% 1014 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 79%
Most Significant Cloud Type: medium
8%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

SW
SW

 16 / 19 mph 66 / 65°F 73% 1014 mb
Low level cloud: 0%
Mid level cloud: 17%
High level cloud: 40%
Most Significant Cloud Type: medium
18%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

SW
SW

 16 / 31 mph 57 / 53°F 83% 1014 mb
Low level cloud: 0%
Mid level cloud: 43%
High level cloud: 100%
Most Significant Cloud Type: medium
47%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
The 7 day weather forecast summary for St. John's:

Over the next 7 days the St. John's forecast suggests the average daytime maximum temperature will be around 18°C, with a high for the week of 23°C expected on the afternoon of Thursday 18th. The average minimum temperature will be 10°C, dipping to its lowest on the morning of Monday 22nd at 6°C. The coming week will have mostly dry days although Saturday is likely to see a little rain. The indicators are that Saturday 22nd will have the most precipitation with an accumulation of around 3.0mm. On the whole winds are likely to be moderate.

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.
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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.
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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