Weather in Erna in September

General weather information about Erna

Average annual temperature is 20.6 °C

Absolute maximum temperature: 41.3 °C

Absolute minimum temperature: -6.6 °C

Number of sunny days: 219 days

Number of rainy days: 146 days

Look at detailed online map of Erna

* Weather data for Erna United States is based on climate observations for 2026 year

Erna air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)27.929.430.334.333.839.439.441.339.732.029.225.4
Average daytime temperature (°C)18.218.924.426.229.535.036.839.234.526.419.117.8
Average temperature (°C)11.511.016.818.823.028.230.632.428.220.613.611.4
Average night temperature (°C)6.25.711.613.317.922.224.225.422.715.69.36.7
Absolute minimum temperature (°C)-4.6-6.62.38.514.017.121.722.919.02.10.7-0.6

Erna monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)10.011.012.013.013.014.014.013.012.011.010.010.0
Daylight mean duration (h)10.411.112.012.913.714.113.913.212.411.410.610.2
Daylight minimum duration (h)10.010.011.012.013.014.013.012.011.010.010.010.0
Sunshine mean duration (h)8.17.57.69.19.612.012.312.210.58.86.47.4
Precipitation (mm)30505128163474549743324
Sunny days20171412917262618182121
Rainy days111117182213551213910
Snow days000000000000

Best time to visit Erna:

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

  • June — 12.0(h)
  • July — 12.3(h)
  • August — 12.2(h)

The largest precipitation sum in Erna is at

  • May — 163(mm)
  • October — 74(mm)
  • Frequently asked questions

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