Hourly Weather Forecast - Letterkenny, Ulster, IE

12 AM
40°F
30%
23mph
SW
30% Chance of Light Rain
Humidity
100%
Feels like
30°F
Dew Point
40°F
1 AM
41°F
40%
21mph
SW
40% Chance Rain Showers
Humidity
100%
Feels like
31°F
Dew Point
41°F
2 AM
41°F
40%
21mph
SW
40% Chance Rain Showers
Humidity
100%
Feels like
32°F
Dew Point
41°F
3 AM
42°F
30%
22mph
WSW
30% Chance Rain Showers
Humidity
96%
Feels like
33°F
Dew Point
41°F
4 AM
42°F
30%
22mph
WSW
30% Chance Rain Showers
Humidity
93%
Feels like
33°F
Dew Point
40°F
5 AM
43°F
30%
21mph
WSW
30% Chance Rain Showers
Humidity
90%
Feels like
34°F
Dew Point
40°F
6 AM
42°F
30%
21mph
WSW
30% Chance Rain Showers
Humidity
91%
Feels like
34°F
Dew Point
40°F
7 AM
43°F
30%
21mph
SW
30% Chance Rain Showers
Humidity
91%
Feels like
34°F
Dew Point
40°F
8 AM
43°F
30%
20mph
SW
30% Chance Rain Showers
Humidity
89%
Feels like
34°F
Dew Point
40°F
8:52 AM
9 AM
44°F
30%
20mph
SW
30% Chance Rain Showers
Humidity
86%
Feels like
36°F
Dew Point
40°F
10 AM
45°F
30%
19mph
SW
30% Chance Rain Showers
Humidity
83%
Feels like
37°F
Dew Point
40°F
11 AM
46°F
30%
19mph
SW
30% Chance Rain Showers
Humidity
80%
Feels like
39°F
Dew Point
40°F
12 PM
47°F
40%
20mph
SW
40% Chance Rain Showers
Humidity
78%
Feels like
40°F
Dew Point
40°F
1 PM
47°F
40%
19mph
SW
40% Chance Rain Showers
Humidity
77%
Feels like
40°F
Dew Point
40°F
2 PM
47°F
30%
19mph
SW
30% Chance Rain Showers
Humidity
78%
Feels like
40°F
Dew Point
40°F
3 PM
46°F
30%
18mph
SW
30% Chance Rain Showers
Humidity
80%
Feels like
39°F
Dew Point
40°F
4 PM
45°F
30%
17mph
SW
30% Chance Rain Showers
Humidity
82%
Feels like
38°F
Dew Point
40°F
4:03 PM
5 PM
45°F
30%
14mph
SSW
30% Chance Rain Showers
Humidity
83%
Feels like
38°F
Dew Point
40°F
6 PM
44°F
30%
13mph
SSW
30% Chance Rain Showers
Humidity
85%
Feels like
38°F
Dew Point
40°F
7 PM
44°F
30%
12mph
SSW
30% Chance Rain Showers
Humidity
85%
Feels like
37°F
Dew Point
40°F
8 PM
43°F
30%
13mph
SSW
30% Chance Rain Showers
Humidity
86%
Feels like
37°F
Dew Point
39°F
9 PM
43°F
30%
13mph
SSW
30% Chance of Light Rain
Humidity
87%
Feels like
36°F
Dew Point
39°F
10 PM
42°F
30%
13mph
SSW
30% Chance of Light Rain
Humidity
90%
Feels like
34°F
Dew Point
39°F
11 PM
41°F
30%
13mph
SSW
30% Chance of Light Rain
Humidity
91%
Feels like
34°F
Dew Point
39°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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