May weather forecast
Columbus, MT

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Weather in May

Weather in Columbus, Montana, in May indicates clear signs of transition from spring to summer compared to April. May experiences a rainfall peak of 2.6" (66mm), standing as the wettest month of the year. Mornings and evenings can be cool, but the majority of the days are warm - a testament to the impending summer. The length of daylight increases gradually, which means more sunshine. High pressure characterizes this month's weather, leading to largely clear and dry conditions.

Temperature

An increase in the average high-temperature marks May, moving from April's fresh 51.1°F (10.6°C) to an enjoyable 61°F (16.1°C). In Columbus, an average temperature of 41.5°F (5.3°C) is noted during May nights.

Humidity

In May, the average relative humidity is 62%.

Rainfall

The month with the most rainfall is May, when the rain falls for 17.5 days and typically aggregates up to 2.6" (66mm) of precipitation.

Snowfall

January through May, September through December are months with snowfall. May is the last month it regularly snows. During 1 snowfall days, in May, Columbus aggregates 0.91" (23mm) of snow. In Columbus, during the entire year, snow falls for 63.3 days and aggregates up to 39.09" (993mm) of snow.

Daylight

In May, the average length of the day is 14h and 56min.
On the first day of May in Columbus, sunrise is at 6:03 am and sunset at 8:24 pm. On the last day of the month, sunrise is at 5:31 am and sunset at 8:58 pm MDT.

Sunshine

The average sunshine in May in Columbus is 10.3h.

UV index

In May, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: A maximum high daily UV index of 4 during May translates into the following directions:
Ensure safety - Imperative it is to shield skin and eyes from damage. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
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Frequently asked questions

What is the temperature in May in Columbus?

The high-temperature, in May, in Columbus, is 61°F (16.1°C), while the low-temperature averages to 41.5°F (5.3°C).

What is the average humidity in May in Columbus?

In Columbus, the average relative humidity in May is 62%.

What is the wettest month in Columbus?

May is the month with the most rainfall in Columbus, Montana. Rain falls for 17.5 days and accumulates 2.6" (66mm) of precipitation.

How much does it rain in Columbus in May?

In Columbus, Montana, during May, the rain falls for 17.5 days and regularly aggregates up to 2.6" (66mm) of precipitation.

What is the last month it snows in Columbus?

May is the last month it regularly snows. During 1 snowfall days, in May, Columbus aggregates 0.91" (23mm) of snow.

How many hours of daylight does Columbus have in May?

The average day length in May in Columbus, Montana, is 14h and 56min.

When is the sunrise / sunset in May in Columbus?

On the first day of May in Columbus, Montana, sunrise is at 6:03 am and sunset at 8:24 pm. On the last day of the month, sunrise is at 5:31 am and sunset at 8:58 pm MDT.

How long on average sun shines in May in Columbus?

The average sunshine duration in May in Columbus is 10.3h.

What is the UV index reading in May in Columbus?

In Columbus, the average daily maximum UV index in May is 4. A UV Index estimate of 3 to 5 represents a medium health risk from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Columbus, MT

Average temperature in May - Columbus, MT
  • Average high temperature in May: 61°F

The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is December (30.9°F).

  • Average low temperature in May: 41.5°F

The month with the highest average low temperature is August (57.2°F).
The coldest month (with the lowest average low temperature) is February (17.4°F).

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Average pressure in May
Columbus, MT

Average pressure in May - Columbus, MT
  • Average pressure in May: 29.93"Hg

The months with the highest atmospheric pressure are January and December (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

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Average wind speed in May
Columbus, MT

Average wind speed in May - Columbus, MT
  • Average wind speed in May: 7.2mph

The windiest month (with the highest average wind speed) is January (8.9mph).
The calmest month (with the lowest average wind speed) is August (6.1mph).

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Average humidity in May
Columbus, MT

Average humidity in May - Columbus, MT
  • Average humidity in May: 62%

The month with the highest relative humidity is January (76%).
The month with the lowest relative humidity is August (41%).

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Average rainfall in May
Columbus, MT

Average rainfall in May - Columbus, MT
  • Average rainfall in May: 2.6"

The wettest month (with the highest rainfall) is May (2.6").
The driest month (with the least rainfall) is January (0.63").

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Average rainfall days in May
Columbus, MT

Average rainfall days in May - Columbus, MT
  • Average rainfall days in May: 17.5 days

The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is February (6.7 days).

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Average snowfall in May
Columbus, MT

Average snowfall in May - Columbus, MT
  • Average snowfall in May: 0.91"

The month with the highest snowfall is February (7.36").
The months with the least snowfall are June, July and August (0").

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Average snowfall days in May
Columbus, MT

Average snowfall days in May - Columbus, MT
  • Average snowfall days in May: 1 days

The month with the highest number of snowfall days is February (13.4 days).
The months with the least snowfall days are June, July and August (0 days).

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Average daylight in May /
Average sunshine in May
Columbus, MT

Average daylight in May / Average sunshine in May - Columbus, MT
  • Average daylight in May: 14h and 5min

The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).

  • Average sunshine in May: 10h and 2min

The month with the most sunshine is July (Average sunshine: 12h and 0min).
The months with the least sunshine are February and December (Average sunshine: 6h and 12min).

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Average sunshine days in May
Columbus, MT

Average sunshine days in May - Columbus, MT
  • Average sunshine days in May: 9.9 days

The month with the most sunshine days is September (18.9 days).
The month with the least sunshine days is April (9.5 days).

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Average UV index in May
Columbus, MT

Average UV index in May - Columbus, MT
  • Average UV index in May: 4

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

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Average cloud cover in May
Columbus, MT

Average cloud cover in May - Columbus, MT
  • Average cloud cover in May: 33

The month with the most cloud cover is February (Cloud cover 39).
The month with the least cloud cover is August (Cloud cover 14).

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Average visibility in May
Columbus, MT

Average visibility in May - Columbus, MT
  • Average visibility in May: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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Columbus, Montana, USA

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