May weather forecast
Augusta, MT

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Weather in May

May, the last month of the spring in Augusta, is a mild month, with temperature in the range of an average high of 60.4°F (15.8°C) and an average low of 41.7°F (5.4°C).

Temperature

As Augusta transitions into May, the average high-temperature shows a change, moving from a frosty 49.6°F (9.8°C) in April to a refreshing 60.4°F (15.8°C). Augusta records an average nighttime low of 41.7°F (5.4°C) in May.

Humidity

In May, the average relative humidity is 58%.

Rainfall

In Augusta, during May, the rain falls for 11.3 days and regularly aggregates up to 1.61" (41mm) of precipitation. In Augusta, during the entire year, the rain falls for 73.3 days and collects up to 9.17" (233mm) of precipitation.

Snowfall

January through May, September through December are months with snowfall. May is the last month it regularly snows. During 1.1 snowfall days, in May, Augusta aggregates 1.26" (32mm) of snow. In Augusta, during the entire year, snow falls for 50.3 days and aggregates up to 21.26" (540mm) of snow.

Daylight

The average length of the day in May is 15h and 9min.
On the first day of May, sunrise is at 6:11 am and sunset at 8:42 pm. On the last day of the month, sunrise is at 5:36 am and sunset at 9:18 pm MDT.

Sunshine

In May, the average sunshine is 10.3h.

UV index

In May, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the average person.
Note: In May, the UV index of 4 transforms into the following advice:
Take precautions - Protection against sun damage is advised. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Updated: Jul 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in May?

The high-temperature, in May, in Augusta, records 60.4°F (15.8°C), while the low-temperature is 41.7°F (5.4°C).

What is the average humidity in May?

In May, the average relative humidity is 58%.

How many days does it rain in May?

In Augusta, in May, it is raining for 11.3 days, with typically 1.61" (41mm) of accumulated precipitation.

What is the last month it snows?

May is the last month it regularly snows. During 1.1 snowfall days, in May, Augusta aggregates 1.26" (32mm) of snow.

How many hours of daylight does Augusta have in May?

In May, the average day length is 15h and 9min.

When is the sunrise / sunset in May?

In May, on the first day of the month, sunrise is at 6:11 am and sunset at 8:42 pm. On the last day of the month, sunrise is at 5:36 am and sunset at 9:18 pm MDT.

How long on average sun shines in May?

The average sunshine duration in May is 10.3h.

What is the UV index reading in May?

In May, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a medium hazard to health from 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
Augusta, MT

Average temperature in May - Augusta, MT
  • Average high temperature in May: 60.4°F

The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is December (28.8°F).

  • Average low temperature in May: 41.7°F

The month with the highest average low temperature is August (55.9°F).
The coldest month (with the lowest average low temperature) is December (16.2°F).

Average pressure in May
Augusta, MT

Average pressure in May - Augusta, MT
  • Average pressure in May: 29.94"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

Average wind speed in May
Augusta, MT

Average wind speed in May - Augusta, MT
  • Average wind speed in May: 9mph

The windiest month (with the highest average wind speed) is January (11.2mph).
The calmest months (with the lowest average wind speed) are July and August (8mph).

Average humidity in May
Augusta, MT

Average humidity in May - Augusta, MT
  • Average humidity in May: 58%

The month with the highest relative humidity is January (76%).
The month with the lowest relative humidity is August (42%).

Average rainfall in May
Augusta, MT

Average rainfall in May - Augusta, MT
  • Average rainfall in May: 1.61"

The wettest month (with the highest rainfall) is June (1.93").
The driest month (with the least rainfall) is December (0.35").

Average rainfall days in May
Augusta, MT

Average rainfall days in May - Augusta, MT
  • Average rainfall days in May: 11.3 days

The month with the highest number of rainy days is May (11.3 days).
The month with the least rainy days is November (2.7 days).

Average snowfall in May
Augusta, MT

Average snowfall in May - Augusta, MT
  • Average snowfall in May: 1.26"

The month with the highest snowfall is February (4.17").
The months with the least snowfall are June, July and August (0").

Average snowfall days in May
Augusta, MT

Average snowfall days in May - Augusta, MT
  • Average snowfall days in May: 1.1 days

The month with the highest number of snowfall days is February (11.3 days).
The months with the least snowfall days are July and August (0 days).

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

Average daylight in May / Average sunshine in May - Augusta, MT
  • Average daylight in May: 15h and 1min

The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).

  • Average sunshine in May: 10h and 2min

The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).

Average sunshine days in May
Augusta, MT

Average sunshine days in May - Augusta, MT
  • Average sunshine days in May: 16.8 days

The month with the most sunshine days is October (23.2 days).
The month with the least sunshine days is February (15.8 days).

Average UV index in May
Augusta, MT

Average UV index in May - Augusta, 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, October, November and December (UV index 2).

Average cloud cover in May
Augusta, MT

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

The month with the most cloud cover is February (Cloud cover 41).
The month with the least cloud cover is July (Cloud cover 14).

Average visibility in May
Augusta, MT

Average visibility in May - Augusta, 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).

Augusta, Montana, USA

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