Hourly Weather Forecast - Letterkenny, Ulster, IE

10 AM
54°F
70%
19mph
S
70% Chance of Rain
Humidity
94%
Feels like
54°F
Dew Point
52°F
11 AM
54°F
80%
21mph
S
80% Chance of Light Rain
Humidity
92%
Feels like
54°F
Dew Point
52°F
12 PM
55°F
90%
23mph
SSW
Light Rain
Humidity
91%
Feels like
55°F
Dew Point
52°F
1 PM
55°F
90%
24mph
SSW
Light Rain
Humidity
91%
Feels like
55°F
Dew Point
52°F
2 PM
55°F
60%
22mph
SSW
60% Chance of Light Rain
Humidity
92%
Feels like
55°F
Dew Point
53°F
3 PM
55°F
80%
21mph
SSW
80% Chance of Light Rain
Humidity
93%
Feels like
55°F
Dew Point
53°F
4 PM
54°F
90%
14mph
SSW
Rain
Humidity
91%
Feels like
54°F
Dew Point
52°F
4:02 PM
5 PM
53°F
90%
12mph
SSW
Light Rain
Humidity
89%
Feels like
53°F
Dew Point
50°F
6 PM
51°F
90%
8mph
WSW
Light Rain
Humidity
88%
Feels like
51°F
Dew Point
48°F
7 PM
50°F
80%
9mph
WNW
80% Chance of Light Rain
Humidity
87%
Feels like
46°F
Dew Point
46°F
8 PM
48°F
50%
9mph
W
50% Chance of Light Rain
Humidity
88%
Feels like
45°F
Dew Point
45°F
9 PM
47°F
40%
9mph
W
40% Chance Rain Showers
Humidity
89%
Feels like
43°F
Dew Point
44°F
10 PM
47°F
30%
8mph
WSW
30% Chance Rain Showers
Humidity
90%
Feels like
42°F
Dew Point
44°F
11 PM
46°F
30%
9mph
WSW
30% Chance of Light Rain
Humidity
87%
Feels like
42°F
Dew Point
43°F

Wind chill temperatures Monday A.M.

Cold Weather Chills the Nation Down to the Gulf

Extreme cold paired with their wind chill values will shiver much of the nation.

Snowfall forecast through Monday evening.

Mid-Atlantic, Great Lakes Snow Piles Up

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

Cold Air Damming - Cause And Effects

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