Lewiston weather in September 2020

  • 25°C maximum daytime temperature in September in Lewiston25
    25°C max day temperature
  • 9 hours of sunshine per day
  • 6 days with some rainfall in September in Lewiston6
    6 days with some rainfall
  • 9°C minimum night-time temperature in September in Lewiston9
    9°C min night temperature
  • 12 hours of daylight per day in September in Lewiston12
    12 hours of daylight per day
  • No heat & humidity in September in Lewiston0
    No heat & humidity
  • 21 mm monthly rainfall in September in Lewiston21
    21 mm of monthly rainfall
  • UV (maximum) index 5 (Moderate) in September in Lewiston5
    5 (Moderate) UV index
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The September weather guide for Lewiston, Idaho shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

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How hot is it in Lewiston in September?

Daytime temperatures usually reach 25°C in Lewiston in September with no heat and humidity, falling to 9°C at night.

How sunny is it in Lewiston in September?

There are normally 9 hours of bright sunshine each day in Lewiston in September - that's 74% of daylight hours.

Does it rain in Lewiston in September?

There are usually 6 days with some rain in Lewiston in September and the average monthly rainfall is 21mm.

Lewiston sunrise & sunset times for September 2020

Browse the sunrise & sunset times for Lewiston in September 2020. Select a month to view Lewiston sunrise & sunset times for the next twelve months.


Date Sunrise times Sunset times
Tuesday, 1st September 2020 06:09 19:26
Tuesday, 15th September 2020 06:27 18:58
Wednesday, 30th September 2020 06:46 18:29
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Metric (°C / mm)  |  Imperial (°F / inches)

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Where's hot in Idaho in September?

Below are average maximum temperatures at popular destinations in Idaho in September. Select a destination to see more weather parameters.

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