Snow in DeKalb, Illinois Winter storm alerts · 7-day snow forecast · average snowfall
Alerts for DeKalb right now
Checking the National Weather Service…
Snow forecast — next 7 days
Loading the NWS forecast…
DeKalb averages 33.1 inches of snow a year. The snowiest month is January (10.2″), and snow usually falls from October through April. On about 11 days a year at least an inch falls. Snow covers the ground (1″+) on roughly 57 days of an average winter.
Average snowfall by month
Month
Snowfall
Days 1″+
Days with snow cover
Freezing nights
Avg. low
October
0.1″
<1
0
6
41°F
November
1.8″
1
2
19
30°F
December
6.6″
3
12
28
19°F
January
10.2″
4
21
30
13°F
February
8.7″
3
15
26
17°F
March
4.4″
1
6
23
27°F
April
1.3″
<1
1
8
37°F
May
0″
0
0
1
49°F
Year
33.1″
11
57
141
NOAA NCEI U.S. Climate Normals 1991–2020 — snowfall at De Kalb (1 mi from the city center, -13 ft elevation difference). Averages smooth out big years: single winters can bring half or double the normal.
33.1 inches in an average year (NOAA U.S. Climate Normals 1991–2020, De Kalb station, 1 miles away). The snowiest month is January with 10.2 inches.
Is there a winter storm warning for DeKalb today?
This page checks the National Weather Service for active alerts at DeKalb's location every time you open it; the box at the top lists any winter storm, winter weather, cold or freeze alert in effect right now.
How many freezing nights does DeKalb have?
About 141 nights a year drop to 32 °F or below (NOAA 1991–2020); the coldest month, January, averages a low of 13 °F.