Best time to visit Plains, MT

A month-by-month travel weather guide based on NOAA 30-year climate normals.

The most comfortable travel window in Plains runs from May through September — 5 months of pleasant temperatures and modest rainfall.

January Cold
High
35.0°F
Low
21.5°F
Precip
in

Winter weather. Plan around weather; good for snow sports if applicable.

Daylight ≈ 8h 39m

February Cold
High
41.0°F
Low
21.4°F
Precip
in

Winter weather. Plan around weather; good for snow sports if applicable.

Daylight ≈ 10h 1m

March Cool
High
50.6°F
Low
26.3°F
Precip
in

Mild but on the chilly side. Pack a jacket; great for hiking and city walks.

Daylight ≈ 11h 39m

April Cool
High
59.0°F
Low
31.5°F
Precip
in

Mild but on the chilly side. Pack a jacket; great for hiking and city walks.

Daylight ≈ 13h 23m

May Good
High
69.0°F
Low
38.3°F
Precip
in

Comfortable for most activities. Bring layers; nights can be cool.

Daylight ≈ 14h 54m

June Good
High
76.5°F
Low
44.1°F
Precip
in

Comfortable for most activities. Bring layers; nights can be cool.

Daylight ≈ 15h 41m

July Good
High
86.4°F
Low
47.2°F
Precip
in

Comfortable for most activities. Bring layers; nights can be cool.

Daylight ≈ 15h 24m

August Good
High
86.7°F
Low
45.3°F
Precip
in

Comfortable for most activities. Bring layers; nights can be cool.

Daylight ≈ 14h 4m

September Good
High
76.0°F
Low
39.4°F
Precip
in

Comfortable for most activities. Bring layers; nights can be cool.

Daylight ≈ 12h 19m

October Cool
High
58.5°F
Low
32.1°F
Precip
in

Mild but on the chilly side. Pack a jacket; great for hiking and city walks.

Daylight ≈ 10h 35m

November Cold
High
41.8°F
Low
26.4°F
Precip
in

Winter weather. Plan around weather; good for snow sports if applicable.

Daylight ≈ 9h 2m

December Cold
High
33.3°F
Low
20.9°F
Precip
in

Winter weather. Plan around weather; good for snow sports if applicable.

Daylight ≈ 8h 16m

Looking for similar climates? See Plains's climate twins. Or jump straight to the full climate profile.