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Greencastle Weather Forecast

Temperature, wind, rain and more for Greencastle

Pennsylvania, United States Of America

DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Thu 18
Dec		07:00

SE
SE

 4 / 9 mph 33 / 29°F 90% 1024 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: medium
2%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

SSE
SSE

 6 / 7 mph 42 / 38°F 68% 1024 mb
Low level cloud: 0%
Mid level cloud: 30%
High level cloud: 0%
Most Significant Cloud Type: medium
30%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

SSE
SSE

 12 / 14 mph 48 / 43°F 64% 1019 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: medium
2%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

SE
SE

 10 / 15 mph 46 / 41°F 77% 1017 mb
Low level cloud: 23%
Mid level cloud: 31%
High level cloud: 19%
Most Significant Cloud Type: low
35%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

SSE
SSE

 12 / 20 mph 47 / 42°F 74% 1015 mb
Low level cloud: 77%
Mid level cloud: 54%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

SSE
SSE

 16 / 26 mph 48 / 42°F 89% 1009 mb
Low level cloud: 97%
Mid level cloud: 79%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
Fri 19
Dec		01:00

SSE
SSE

 22 / 33 mph 54 / 48°F 95% 1002 mb
Low level cloud: 100%
Mid level cloud: 51%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.2 In of precipitation over the past 3 hours.
0.2 In
04:00

S
S

 21 / 33 mph 56 / 51°F 96% 997 mb
Low level cloud: 100%
Mid level cloud: 80%
High level cloud: 37%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
07:00

WSW
WSW

 20 / 29 mph 46 / 39°F 75% 999 mb
Low level cloud: 3%
Mid level cloud: 64%
High level cloud: 32%
Most Significant Cloud Type: medium
75%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
10:00

WSW
WSW

 15 / 19 mph 46 / 39°F 67% 1000 mb
Low level cloud: 13%
Mid level cloud: 15%
High level cloud: 0%
Most Significant Cloud Type: low
18%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
13:00

W
W

 22 / 25 mph 38 / 27°F 62% 1003 mb
Low level cloud: 47%
Mid level cloud: 48%
High level cloud: 0%
Most Significant Cloud Type: low
64%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

WNW
WNW

 23 / 28 mph 30 / 16°F 57% 1009 mb
Low level cloud: 52%
Mid level cloud: 16%
High level cloud: 0%
Most Significant Cloud Type: low
57%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

WNW
WNW

 24 / 34 mph 27 / 12°F 57% 1013 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

WNW
WNW

 20 / 30 mph 27 / 13°F 56% 1016 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 2%
Most Significant Cloud Type: high
1%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
The 7 day weather forecast summary for Greencastle:

The forecast for Greencastle in the coming week is predicting the average daytime maximum temperature will be around 7°C, with a high for the week of 13°C expected on the morning of Friday 19th. The mean minimum temperature will be -1°C, dipping to its lowest on the morning of Monday 22nd at -5°C. The coming week will have mostly dry days although Thursday 18th and Friday 19th are likely to see a significant amount of rain or snow. It looks like Friday 22nd will have the most precipitation with an accumulation of around 10.0mm. 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