Lewistown weather in May 2020

  • 17°C maximum daytime temperature in May in Lewistown17
    17°C max day temperature
  • 10 hours of sunshine per day
  • 11 days with some rainfall in May in Lewistown11
    11 days with some rainfall
  • 3°C minimum night-time temperature in May in Lewistown3
    3°C min night temperature
  • 15 hours of daylight per day in May in Lewistown15
    15 hours of daylight per day
  • No heat & humidity in May in Lewistown0
    No heat & humidity
  • 82 mm monthly rainfall in May in Lewistown82
    82 mm of monthly rainfall
  • UV (maximum) index 7 (High) in May in Lewistown7
    7 (High) UV index
  • Top deals & discounts
  • Lewistown weather overview
  • Lewistown climate averages by month
  • More destinations
  • Best time to go to Lewistown
  • Lewistown 5-day weather forecast

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

The May weather guide for Lewistown, Montana 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.

  • Save up to 15% on Avis car hire for USA
  • Offer available at participating locations in the USA
  • Plus receive 25-65% discount on designer shopping
  • Travel before 28th February 2020 (inclusive)
Show discount codeShow discount code ******101

Expires at 23:59 on Tuesday 31st Dec 2019 · View all Avis offers

How warm is it in Lewistown in May?

Daytime temperatures usually reach 17°C in Lewistown in May, falling to 3°C at night.

How sunny is it in Lewistown in May?

There are normally 10 hours of bright sunshine each day in Lewistown in May - that's 64% of daylight hours.

Does it rain in Lewistown in May?

There are usually 11 days with some rain in Lewistown in May and the average monthly rainfall is 82mm.

Lewistown sunrise & sunset times for May 2020

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


Date Sunrise times Sunset times
Friday, 1st May 2020 06:01 20:29
Saturday, 16th May 2020 05:40 20:49
Sunday, 31st May 2020 05:27 21:05
  • Compare the prices with the leading car hire companies
  • Including Alamo, Avis, Budget, Europcar, Hertz, Sixt & Thrifty
  • Plus 24/7 support from UK based office

Metric (°C / mm)  |  Imperial (°F / inches)

Back to top

Discover more about the USA

Where's hot in Montana in May?

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

More destinations & map >>

Related posts

Popular travel offers

Top ^

*affiliate links: find out how we are funded and why this helps us remain free to use.