Weather statistics for Skien (Telemark)

  1. Warning sign

    Ongoing: High forest fire danger (Vest-Agder, Aust-Agder, Telemark, Vestfold, Oestfold, Oslo and Akershus and Buskerud)

    Very high grass and forest fire danger until significant amount of precipitation.


    1. Saturday July 21, 2018 08:00
      Increasing danger
    2. Ukjent sluttidspunkt

    Vegetation is very easily ignited and very large areas may be affected. Be very careful with open fire. Follow the instructions from the local authorities.

Gjerpen observation station (30330)

The station is located in Skien municipality, 41 m.a.s.l. It is the closest official weather station, 2.6 km away from Skien. The station was established in January 2005. The station measures precipitation and temperature. There are no normals for precipitation and temperature. There may be missing data.

Last 30 days: Highest temperature was 30.6 °C (28 June), and the lowest was 7.1 °C (1 July).

Last 13 full months: Highest temperature was 30.6 °C (28. Jun. 2018) and the lowest -18.0 °C (26. Feb. 2018). Highest daily precipitation was 57.2 mm (25. Oct. 2017).

Graph explanation. Hide explanation

The black line shows mean value (both precipitation and temperature). Some stations does not have mean values, and hence no black line.

The red/blue line shows average temperature during the day (24h) (equalized for 30 days). The line is red by pluss degrees, and blue by minus degrees.

The red/blue areas shows the temperature variations throughout the day (24h) with max- and min. temperature as endpoints. The area is red by pluss degrees, and blue by minus degrees.

The lightblue bars shows total precipitation this month. The black lines crossing is the normal (mean) value for precipitation.

The dark grey bars behind the precipitation bars shows snowdepth measured day by day.

Some stations only measures precipitation, while others only measures temperature. If an area or bar is missing the station does not measure this data.

NB! Precipitation is measured at 07 hours Norwegian time. The value (in mm) shows last 24 hours until 07 hours (08 hours summertime). Download other weather statistics from

Tabular view for temperature and precipitation per month
Months Temperature Precipitation
Average Normal Warmest Coldest Total Normal Highest
daily value
Jun 2018 20.0°C 30.6°C Jun 28 10.3°C Jun 30 0.0 mm Jun 26
May 2018 14.9°C 28.6°C May 25 0.7°C May 4 0.0 mm May 1
Apr 2018 6.2°C 19.0°C Apr 18 -7.6°C Apr 3 0.0 mm Apr 27
Mar 2018 -2.1°C 11.8°C Mar 25 -16.8°C Mar 18
Feb 2018 -3.8°C 3.5°C Feb 18 -18.0°C Feb 26
Jan 2018 -1.5°C 7.2°C Jan 25 -15.2°C Jan 7
Dec 2017 -1.9°C 12.6°C Dec 24 -11.6°C Dec 17
Nov 2017 0.7°C 13.6°C Nov 2 -7.3°C Nov 20 16.2 mm Nov 5
Oct 2017 7.2°C 17.7°C Oct 3 -2.1°C Oct 10 146.0 mm 57.2 mm Oct 25
Sep 2017 12.5°C 20.3°C Sep 1 5.1°C Sep 1 63.4 mm 16.6 mm Sep 12
Aug 2017 14.8°C 24.5°C Aug 10 4.9°C Aug 14 91.8 mm 15.4 mm Aug 16
Jul 2017 16.6°C 25.7°C Jul 1 7.2°C Jul 6 37.8 mm 9.8 mm Jul 31
Jun 2017 15.2°C 25.6°C Jun 18 5.8°C Jun 5 123.6 mm 36.0 mm Jun 8