Montana, USA
Long-term weather forecast
Long-term weather forecast

May weather forecast and climate
Colstrip, MT

May, the last month of the spring, in Colstrip, is an agreeable month, with average temperature fluctuating between 68.7°F (20.4°C) and 40.8°F (4.9°C).


In May, the average high-temperature increases, from a mild 58.6°F (14.8°C) in April, to an agreeable 68.7°F (20.4°C). The average low-temperature, is 40.8°F (4.9°C).


In Colstrip, in May, it is raining for 10 days, with typically 2.5" (64mm) of accumulated precipitation. Throughout the year, in Colstrip, there are 75 rainfall days, and 15" (382mm) of precipitation is accumulated.


In May, the average length of the day is 15h.

What is the temperature in May in Colstrip?

In May, in Colstrip, the average high-temperature is 68.7°F (20.4°C), and the average low-temperature is 40.8°F (4.9°C).

How much does it rain in Colstrip in May?

In Colstrip, Montana, in May, during 10 rainfall days, 2.5" (64mm) of precipitation is typically accumulated.

How many hours of daylight does Colstrip have in May?

In Colstrip, Montana, the average length of the day in May is 15h.
Average temperature in May - Colstrip, MT
  • Average high temperature in May: 68.7°F

The warmest month (with the highest average high temperature) is July (88.2°F).
The month with the lowest average high temperature is January (34.3°F).

  • Average low temperature in May: 40.8°F

The month with the highest average low temperature is July (55.6°F).
The coldest month (with the lowest average low temperature) is January (9.5°F).

Average rainfall in May - Colstrip, MT
  • Average rainfall in May: 2.5"

The wettest month (with the highest rainfall) is June (2.7").
The driest month (with the lowest rainfall) is February (0.5").

Average rainfall days in May - Colstrip, MT
  • Average rainfall days in May: 10 days

The month with the highest number of rainy days is May (10 days).
Months with the lowest number of rainy days are February, August, September, October, November and December (5 days).

Average daylight in May - Colstrip, MT
  • Average daylight in May: 15h

The month with the longest days is June (Average daylight: 15.7h).
The month with shortest days is December (Average daylight: 8.7h).