Hourly Weather Forecast - Letterkenny, Ulster, IE

12 AM
37°F
0%
5mph
SSW
Partly Cloudy
Humidity
95%
Feels like
33°F
Dew Point
36°F
1 AM
37°F
0%
6mph
SSW
Partly Cloudy
Humidity
95%
Feels like
33°F
Dew Point
36°F
2 AM
37°F
0%
6mph
SSW
Partly Cloudy
Humidity
96%
Feels like
33°F
Dew Point
36°F
3 AM
37°F
0%
6mph
SSW
Partly Cloudy
Humidity
96%
Feels like
32°F
Dew Point
36°F
4 AM
37°F
0%
6mph
SSW
Partly Cloudy
Humidity
95%
Feels like
32°F
Dew Point
36°F
5 AM
37°F
0%
6mph
SSW
Partly Cloudy
Humidity
96%
Feels like
32°F
Dew Point
36°F
6 AM
37°F
0%
6mph
S
Partly Cloudy
Humidity
97%
Feels like
31°F
Dew Point
36°F
7 AM
37°F
0%
7mph
S
Partly Cloudy
Humidity
96%
Feels like
31°F
Dew Point
35°F
8 AM
37°F
0%
8mph
S
Partly Cloudy
Humidity
95%
Feels like
31°F
Dew Point
36°F
8:49 AM
9 AM
38°F
0%
8mph
SSW
Partly Cloudy
Humidity
92%
Feels like
32°F
Dew Point
36°F
10 AM
39°F
0%
9mph
SSW
Partly Cloudy
Humidity
91%
Feels like
33°F
Dew Point
37°F
11 AM
41°F
0%
10mph
SSW
Partly Cloudy
Humidity
88%
Feels like
35°F
Dew Point
38°F
12 PM
43°F
0%
11mph
SSW
Partly Cloudy
Humidity
85%
Feels like
37°F
Dew Point
38°F
1 PM
44°F
0%
11mph
SSW
Partly Cloudy
Humidity
83%
Feels like
38°F
Dew Point
39°F
2 PM
44°F
0%
12mph
SW
Partly Cloudy
Humidity
83%
Feels like
38°F
Dew Point
40°F
3 PM
44°F
0%
11mph
SW
Partly Cloudy
Humidity
86%
Feels like
38°F
Dew Point
40°F
4 PM
43°F
0%
10mph
SW
Partly Cloudy
Humidity
88%
Feels like
37°F
Dew Point
39°F
4:02 PM
5 PM
42°F
0%
9mph
SSW
Partly Cloudy
Humidity
90%
Feels like
36°F
Dew Point
39°F
6 PM
40°F
0%
8mph
S
Partly Cloudy
Humidity
93%
Feels like
35°F
Dew Point
38°F
7 PM
40°F
0%
9mph
S
Partly Cloudy
Humidity
94%
Feels like
34°F
Dew Point
38°F
8 PM
39°F
0%
10mph
S
Partly Cloudy
Humidity
95%
Feels like
33°F
Dew Point
38°F
9 PM
39°F
0%
11mph
S
Partly Cloudy
Humidity
94%
Feels like
32°F
Dew Point
38°F
10 PM
39°F
0%
13mph
S
Mostly Cloudy
Humidity
93%
Feels like
31°F
Dew Point
37°F
11 PM
39°F
0%
15mph
S
Cloudy
Humidity
91%
Feels like
31°F
Dew Point
37°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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