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Current
Hourly
7 Days
14 Days
Weekend
Monthly
Precipitation
Temperature
Wind
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Trondheim, 23
Content continues below
September
Average Temperature
High
13°
Feels 12
Low
7°
Feels 5
Average Precipitation
15 Days
Rain amount
115.3mm
Snow amount
0cm
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Daily Historical Averages
September 2026
S
M
T
W
T
F
S
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
12°
17
13°
18
14°
19
13°
20
11°
21
11°
22
11°
23
12°
24
10°
25
9°
26
11°
27
9°
28
13°
29
9°
30
9°
Forecast
Wednesday, September 16, 2026
Day
12°
Feels 10
Wind
24 km/h W
Gust
36 km/h
Humidity
91%
P.O.P
90%
Rain
~5 mm
Night
8°
Feels 7
Wind
26 km/h W
Gust
39 km/h
Humidity
94%
P.O.P
90%
Rain
2-4 mm
Historical Averages
Sep 16
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.