Average data for 10 years
1 December
Sunday
−1°
−2°
2 December
Monday
0°
−1°
3 December
Tuesday
−1°
−2°
4 December
Wednesday
0°
−2°
5 December
Thursday
0°
−1°
6 December
Friday
−1°
−2°
7 December
Saturday
−1°
−2°
8 December
Sunday
0°
−1°
9 December
Monday
0°
−2°
10 December
Tuesday
−1°
−1°
11 December
Wednesday
−1°
−3°
12 December
Thursday
−1°
−2°
13 December
Friday
−3°
−3°
14 December
Saturday
−2°
−3°
15 December
Sunday
−1°
−3°
16 December
Monday
−2°
−2°
17 December
Tuesday
−2°
−3°
18 December
Wednesday
−1°
−2°
19 December
Thursday
−1°
−2°
20 December
Friday
−2°
−1°
21 December
Saturday
−1°
−2°
22 December
Sunday
−2°
−3°
23 December
Monday
−3°
−4°
24 December
Tuesday
−3°
−4°
25 December
Wednesday
−1°
−2°
26 December
Thursday
−1°
−3°
27 December
Friday
−2°
−3°
28 December
Saturday
−3°
−3°
29 December
Sunday
−1°
−3°
30 December
Monday
−1°
−3°
31 December
Tuesday
−1°
−3°
December in Mäntsälä is the snowiest and the windiest month of the year. In December, the weather in Mäntsälä is typically freezing. Average daily high temperature in December is about 1 degree below zero. On average, Mäntsälä has 24 snowy, 6 cloudy, and 1 sunny day in December. The snowfalls are usually moderate.