Cool
Average highs are around 17°C, so pack for cooler days.
May verdict
Lewistown (Montana), United States in May
Weather score42Mixed
Mixed for holiday weather
Average highs are around 17°C, so pack for cooler days. Sunshine averages 9.5h per day, so bright days are a strong part of the month. Rainfall averages 82mm, so some wet days are possible.
May weather
Monthly averages
Temp
17°C
Rain
82mm
Sun
9.5h
Weather score
42
Mixed
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 82mm, so some wet days are possible.
Bright
Sunshine averages 9.5h per day, so bright days are a strong part of the month.
Map
Weather map
Compare Lewistown (Montana), United States with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
May17°C average high
May is close to Lewistown (Montana)'s yearly temperature average, giving a typical read on daytime heat.
Warmest monthsJune to August
This stretch sets the upper range for average daytime heat.
Rain
May82mm average rain
May is one of Lewistown (Montana)'s wettest months, so rain is likely to be a major planning factor.
Driest monthsJanuary to April and July to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
May9.5 hours average sun
May is brighter than Lewistown (Montana)'s yearly average, though the strongest sunshine usually sits closer to the peak months.
Brightest monthsJune to August
This stretch has the strongest sunshine in the monthly averages.
Weather score
May42 weather score
May scores below Lewistown (Montana)'s yearly average, so the weather trade-offs are more noticeable.
Best weather monthsJuly to August
These months have the strongest weather score in the monthly averages.
Hotels near Lewistown (Montana), United States
Marriott
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