Weather in Grinna in September

General weather information about Grinna

Average annual temperature is 7.2 °C

Absolute maximum temperature: 29.1 °C

Absolute minimum temperature: -13.9 °C

Number of sunny days: 149 days

Number of rainy days: 179 days

Number of snow days: 37 days

Look at detailed online map of Grinna

* Weather data for Grinna Norway is based on climate observations for 2026 year

Grinna air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)6.810.28.416.921.329.123.722.524.016.47.18.1
Average daytime temperature (°C)2.34.93.19.715.422.118.818.817.99.22.3-1.2
Average temperature (°C)0.21.5-0.65.411.117.615.815.914.96.80.6-3.3
Average night temperature (°C)-2.2-2.1-4.91.25.912.312.512.912.04.4-1.3-5.7
Absolute minimum temperature (°C)-8.9-9.3-13.9-6.9-0.26.210.09.88.00.0-8.1-13.9

Grinna monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)8.010.013.015.017.018.018.016.014.011.08.06.0
Daylight mean duration (h)7.09.211.814.517.018.417.715.512.910.27.76.3
Daylight minimum duration (h)6.08.010.013.015.018.016.014.011.08.06.06.0
Sunshine mean duration (h)2.25.55.79.013.314.211.89.27.14.71.71.5
Precipitation (mm)1675310711330401271581187712197
Sunny days81613162121451213812
Rainy days1891113109272618171110
Snow days5371000001119

Grinna - weather forecast by months

Grinna weather in januaryGrinna weather in februaryGrinna weather in marchGrinna weather in aprilGrinna weather in mayGrinna weather in juneGrinna weather in julyGrinna weather in augustGrinna weather in septemberGrinna weather in octoberGrinna weather in novemberGrinna weather in december

Best time to visit Grinna:

The best time to visit Grinna during the most sunny months:

  • May — 13.3(h)
  • June — 14.2(h)
  • July — 11.8(h)
  • August — 9.2(h)

Months with the longest average daylight duration in Grinna:

  • May — 17.0(h)
  • June — 18.4(h)
  • July — 17.7(h)

The largest precipitation sum in Grinna is at

  • January — 167(mm)
  • July — 127(mm)
  • August — 158(mm)

    • Weather forecast in the closest to Grinna admin centers

    Weather forecast in the closest towns to Grinna

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    Frequently asked questions

    When is the best time to visit Grinna?
    The historical weather data above shows the warmest, sunniest and driest months to help you choose the best time to visit Grinna.
    What is the weather like in Grinna?
    See average temperature, rainfall and daylight hours for Grinna by month in the table above.
    How many sunny days does Grinna have?
    The monthly weather statistics above show sunshine and rainfall patterns for Grinna throughout the year.