Notodden climate — normals and trends
Notodden (Norway) has a subarctic climate (Dfc) under the Köppen-Geiger classification. Its mean annual temperature is 4.0 °C and it receives 1,040 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is July (15.1 °C on average) and the coldest is January (-7.2 °C). Rainfall peaks in August.
Notodden averages 171 frost days, 0 hot days (≥ 30 °C) and 142 rainy days per year.
Notodden has warmed by +3.1 °C between 1940 and 2025, or +0.36 °C per decade. This trend is statistically significant.
The number of frost days there went from about 194 to 148 per year over the period.
The hottest day of the period reached 31.5 °C (on 10 August 1975) and the coldest -33.4 °C (on 8 January 1982).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
NotoddenTelemark
- coords
- 59.56°, 9.26°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
4.0°C
Average daily high
7.6°C
Average daily low
0.3°C
Annual rainfall
1,040mm
Sunshine / day
7.9h
Mean relative humidity
79%
Average peak wind
10.8km/h
Seasonal range
22.3°C
Frost days (< 0 °C)
171 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
142 d/yr
Annual snowfall
245.8 cm
Average feels-like high
4.9 °C
Average feels-like low
-2.7 °C
Average peak gust
32.9 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
9.7 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+3.1 °C
since 1940
+0.4 °C per decade · r² = 0.48 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
31.5 °C
10 August 1975
Coldest day
-33.4 °C
8 January 1982
Wettest day
60 mm
20 August 1951
Windiest day
31.9 km/h
15 January 1952
Strongest gust
116.6 km/h
16 October 1987
Hottest feels-like
31.6 °C
7 July 1991
Coldest feels-like
-38.4 °C
8 January 1982
Snowiest day
32.4 cm
5 March 1972
Sunniest day
17.7 h
16 June 2015
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | -2.2 °C | +2.5 °C | 115 mm | +38 mm |
| Feb | -0.6 °C | +1.9 °C | 45 mm | -13 mm |
| Mar | 6.8 °C | +4.4 °C | 31 mm | -29 mm |
| Apr | 11.8 °C | +4.6 °C | 41 mm | -18 mm |
| May | 15.6 °C | +2.3 °C | 41 mm | -38 mm |
| Jun | 17.8 °C | +0.2 °C | 73 mm | -20 mm |
| Jul | 22.6 °C | +3.2 °C | 153 mm | +45 mm |
| Aug | 18.9 °C | +0.8 °C | 90 mm | -24 mm |
| Sep | 14.7 °C | +1.0 °C | 205 mm | +102 mm |
| Oct | 9.7 °C | +1.9 °C | 154 mm | +50 mm |
| Nov | 4.0 °C | +2.4 °C | 93 mm | -12 mm |
| Dec | 2.2 °C | +4.7 °C | 126 mm | +45 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Notodden?
Notodden has a subarctic climate (Köppen Dfc). Over 1940-2025, the average annual temperature is 4.0 °C and it receives 1,040 mm of precipitation per year.
What is the hottest day ever recorded in Notodden?
The hottest day measured in Notodden between 1940 and 2025 was 10 August 1975, reaching 31.5 °C.
What is the coldest day in Notodden?
The coldest day measured in Notodden between 1940 and 2025 was 8 January 1982, at -33.4 °C.
Does it snow in Notodden?
Yes. Notodden gets on average 245.8 cm of snow per year and has around 171 frost days.
Has the climate of Notodden warmed?
Yes: Notodden warmed by +3.1 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Notodden?
The wettest day measured in Notodden between 1940 and 2025 was 20 August 1951, with 60 mm of rain in 24 hours.
What was the windiest day in Notodden?
The windiest day measured in Notodden between 1940 and 2025 was 15 January 1952, with winds reaching 31.9 km/h.
What is the warmest month in Notodden?
The warmest month in Notodden is July (15.1 °C on average); the coldest is January (-7.2 °C).
How much does it rain in Notodden?
Notodden receives on average 1,040 mm of precipitation per year, spread over about 142 rainy days.
Is it sunny in Notodden?
Notodden gets on average 7.9 hours of sunshine per day, roughly 2,884 hours per year over 1940-2025.
What is the biggest single-day snowfall in Notodden?
The heaviest 24-hour snowfall measured in Notodden between 1940 and 2025 was 5 March 1972, with 32.4 cm.
Are there tropical nights in Notodden?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Notodden.
What was the most extreme apparent temperature in Notodden?
In Notodden, between 1940 and 2025, the highest apparent temperature reached 31.6 °C on 7 July 1991, and the lowest was -38.4 °C on 8 January 1982.
Compare Notodden with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Notodden