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Potomac River ?upper Weather Forecast

Temperature, wind, rain and more for Potomac River ?upper

Virginia, United States Of America

DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Thu 12
Mar		01:00

SW
SW

 10 / 15 mph 69 / 69°F 78% 1005 mb
Low level cloud: 12%
Mid level cloud: 44%
High level cloud: 22%
Most Significant Cloud Type: medium
76%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

NW
NW

 16 / 19 mph 57 / 54°F 74% 1007 mb
Low level cloud: 100%
Mid level cloud: 86%
High level cloud: 32%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

NW
NW

 18 / 20 mph 40 / 31°F 90% 1011 mb
Low level cloud: 99%
Mid level cloud: 91%
High level cloud: 82%
Most Significant Cloud Type: low
100%
Expect 0.3 In of precipitation over the past 3 hours.
0.3 In
10:00

NNW
NNW

 14 / 17 mph 35 / 26°F 96% 1013 mb
Low level cloud: 95%
Mid level cloud: 78%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.4 In of precipitation over the past 3 hours.
0.4 In
13:00

NW
NW

 12 / 15 mph 34 / 26°F 99% 1016 mb
Low level cloud: 86%
Mid level cloud: 76%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.4 In of precipitation over the past 3 hours.
0.4 In
16:00

NW
NW

 8 / 12 mph 37 / 30°F 93% 1017 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
19:00

WNW
WNW

 9 / 15 mph 37 / 30°F 81% 1019 mb
Low level cloud: 0%
Mid level cloud: 12%
High level cloud: 0%
Most Significant Cloud Type: medium
11%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

W
W

 5 / 8 mph 35 / 31°F 86% 1021 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: medium
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Fri 13
Mar		01:00

WSW
WSW

 4 / 8 mph 31 / 28°F 86% 1021 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 69%
Most Significant Cloud Type: high
69%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

SSW
SSW

 4 / 9 mph 31 / 27°F 88% 1021 mb
Low level cloud: 0%
Mid level cloud: 23%
High level cloud: 0%
Most Significant Cloud Type: medium
22%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

S
S

 9 / 14 mph 34 / 27°F 84% 1019 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 87%
Most Significant Cloud Type: medium
7%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

S
S

 14 / 19 mph 39 / 31°F 77% 1017 mb
Low level cloud: 0%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

SSW
SSW

 19 / 23 mph 46 / 38°F 71% 1011 mb
Low level cloud: 34%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

SSW
SSW

 17 / 23 mph 52 / 46°F 64% 1007 mb
Low level cloud: 23%
Mid level cloud: 11%
High level cloud: 1%
Most Significant Cloud Type: low
26%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

SW
SW

 17 / 28 mph 50 / 45°F 65% 1007 mb
Low level cloud: 0%
Mid level cloud: 16%
High level cloud: 0%
Most Significant Cloud Type: medium
15%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

W
W

 15 / 26 mph 50 / 44°F 60% 1010 mb
Low level cloud: 12%
Mid level cloud: 94%
High level cloud: 1%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
The 7 day weather forecast summary for Potomac River ?upper:

The forecast for Potomac River ?upper in the coming week is predicting the average daytime maximum temperature will be around 13°C, with a high for the week of 20°C expected on the morning of Thursday 12th. The average minimum temperature will be 2°C, dipping to its lowest on the morning of Wednesday 18th at -2°C. The week will have mixed overhead conditions with some days dry and some seeing a significant amount of rain or snow. Predictions are Thursday 18th will have the most precipitation with an accumulation of around 31.0mm. 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