Lewistown climate guide

Temperature in Lewistown (°C)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max temperature (daytime)
-1°C maximum daytime temperature in January in Lewistown-1
2°C maximum daytime temperature in February in Lewistown2
5°C maximum daytime temperature in March in Lewistown5
12°C maximum daytime temperature in April in Lewistown12
17°C maximum daytime temperature in May in Lewistown17
22°C maximum daytime temperature in June in Lewistown22
27°C maximum daytime temperature in July in Lewistown27
27°C maximum daytime temperature in August in Lewistown27
20°C maximum daytime temperature in September in Lewistown20
15°C maximum daytime temperature in October in Lewistown15
6°C maximum daytime temperature in November in Lewistown6
0°C maximum daytime temperature in December in Lewistown0
Min temperature (night-time)
-13°C minimum night-time temperature in January in Lewistown-13
-10°C minimum night-time temperature in February in Lewistown-10
-7°C minimum night-time temperature in March in Lewistown-7
-2°C minimum night-time temperature in April in Lewistown-2
3°C minimum night-time temperature in May in Lewistown3
7°C minimum night-time temperature in June in Lewistown7
10°C minimum night-time temperature in July in Lewistown10
10°C minimum night-time temperature in August in Lewistown10
5°C minimum night-time temperature in September in Lewistown5
0°C minimum night-time temperature in October in Lewistown0
-7°C minimum night-time temperature in November in Lewistown-7
-12°C minimum night-time temperature in December in Lewistown-12

Sunshine & Daylight in Lewistown

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Daily hours of sunshine
Daily hours of daylight
9 hours of daylight per day in January in Lewistown9
10 hours of daylight per day in February in Lewistown10
12 hours of daylight per day in March in Lewistown12
14 hours of daylight per day in April in Lewistown14
15 hours of daylight per day in May in Lewistown15
16 hours of daylight per day in June in Lewistown16
15 hours of daylight per day in July in Lewistown15
14 hours of daylight per day in August in Lewistown14
13 hours of daylight per day in September in Lewistown13
11 hours of daylight per day in October in Lewistown11
9 hours of daylight per day in November in Lewistown9
9 hours of daylight per day in December in Lewistown9

Rainfall in Lewistown

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Number of days with some rain
8 days with some rainfall in January in Lewistown8
7 days with some rainfall in February in Lewistown7
8 days with some rainfall in March in Lewistown8
9 days with some rainfall in April in Lewistown9
11 days with some rainfall in May in Lewistown11
10 days with some rainfall in June in Lewistown10
7 days with some rainfall in July in Lewistown7
7 days with some rainfall in August in Lewistown7
7 days with some rainfall in September in Lewistown7
5 days with some rainfall in October in Lewistown5
6 days with some rainfall in November in Lewistown6
7 days with some rainfall in December in Lewistown7
Average monthly rainfall (mm)
21 mm monthly rainfall in January in Lewistown21
16 mm monthly rainfall in February in Lewistown16
23 mm monthly rainfall in March in Lewistown23
31 mm monthly rainfall in April in Lewistown31
82 mm monthly rainfall in May in Lewistown82
78 mm monthly rainfall in June in Lewistown78
43 mm monthly rainfall in July in Lewistown43
45 mm monthly rainfall in August in Lewistown45
37 mm monthly rainfall in September in Lewistown37
26 mm monthly rainfall in October in Lewistown26
18 mm monthly rainfall in November in Lewistown18
19 mm monthly rainfall in December in Lewistown19

More climate for Lewistown

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (Maximum)
UV (maximum) index 1 (Low) in January in Lewistown1
UV (maximum) index 2 (Low) in February in Lewistown2
UV (maximum) index 3 (Moderate) in March in Lewistown3
UV (maximum) index 5 (Moderate) in April in Lewistown5
UV (maximum) index 7 (High) in May in Lewistown7
UV (maximum) index 8 (Very High) in June in Lewistown8
UV (maximum) index 8 (Very High) in July in Lewistown8
UV (maximum) index 7 (High) in August in Lewistown7
UV (maximum) index 5 (Moderate) in September in Lewistown5
UV (maximum) index 3 (Moderate) in October in Lewistown3
UV (maximum) index 1 (Low) in November in Lewistown1
UV (maximum) index 1 (Low) in December in Lewistown1
Heat & Humidity
No heat & humidity in January in Lewistown0
No heat & humidity in February in Lewistown0
No heat & humidity in March in Lewistown0
No heat & humidity in April in Lewistown0
No heat & humidity in May in Lewistown0
No heat & humidity in June in Lewistown0
Low heat & humidity in July in LewistownL
Low heat & humidity in August in LewistownL
No heat & humidity in September in Lewistown0
No heat & humidity in October in Lewistown0
No heat & humidity in November in Lewistown0
No heat & humidity in December in Lewistown0

Note: 0 = None, L = Low, M = Moderate, H = High, VH = Very high, E = Extreme

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

The climate guide for Lewistown, Montana shows long term monthly 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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Metric (°C / mm)  |  Imperial (°F / inches)

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