Hourly Weather Forecast - Guyancourt, Ile-del-France, FR

12 AM
43°F
30%
7mph
ESE
30% Chance of Light Rain
Humidity
97%
Feels like
39°F
Dew Point
42°F
1 AM
44°F
30%
6mph
ESE
30% Chance of Light Rain
Humidity
96%
Feels like
40°F
Dew Point
42°F
2 AM
44°F
30%
6mph
ESE
30% Chance of Light Rain
Humidity
93%
Feels like
41°F
Dew Point
42°F
3 AM
45°F
10%
5mph
E
Cloudy
Humidity
89%
Feels like
42°F
Dew Point
42°F
4 AM
45°F
20%
5mph
ENE
Mostly Cloudy
Humidity
88%
Feels like
42°F
Dew Point
42°F
5 AM
45°F
20%
5mph
ENE
Mostly Cloudy
Humidity
88%
Feels like
42°F
Dew Point
42°F

Rainfall and Snowfall Totals Through Wednesday

Heavy Rain, Snow, and Winds Wallop Northwest

The atmospheric river this week continues to hit the Pacific Northwest with heavy rain, snow, and high winds.

Wednesday's Weather Outlook

Today's Weather Outlook

How to Measure Snow via NWS

How To Measure Snow

Weekly Drought Map for December 11, 2025

Hit-or-Miss Precipitation Leads to Mixed Drought Results

A person standing in a snowy forest with their back to the camera. They are bundled up in a white hat and a brown jacket. (Image by StockSnap from Pixabay)

Common Cold Weather Illnesses

A strong cold-air-damming event from March 20, 2018.

Cold Air Damming - Cause And Effects

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