Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
Simms in May sees a temperature change, with average high-temperatures moving from a cool 51.4°F (10.8°C) in April to a comfortable 62.2°F (16.8°C). During May, Simms experiences an average low-temperature of 41.9°F (5.5°C) at night.Humidity
The average relative humidity in May is 59%.Rainfall
In Simms, Montana, in May, it is raining for 15.2 days, with typically 1.69" (43mm) of accumulated precipitation. In Simms, during the entire year, the rain falls for 112.8 days and collects up to 12.95" (329mm) of precipitation.Snowfall
Months with snowfall are January through May, September through December. May is the last month it regularly snows in Simms, Montana. During 1.2 snowfall days, in May, Simms aggregates 0.63" (16mm) of snow. Throughout the year, in Simms, there are 69.4 snowfall days, and 35.35" (898mm) of snow is accumulated.Daylight
In May, the average length of the day is 15h and 8min.On the first day of May, sunrise is at 6:09 am and sunset at 8:40 pm. On the last day of the month, sunrise is at 5:34 am and sunset at 9:16 pm MDT.
Sunshine
The average sunshine in May in Simms, Montana, is 10.1h.UV index
The average daily maximum UV index in May in Simms, Montana, is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for average individuals.Note: A maximum daily UV index of 4 during May morphs into the following directions:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Simms in May?
What is the average humidity in May in Simms?
How many days does it rain in May in Simms?
What is the last month it snows in Simms?
What is the average length of the day in May in Simms?
When are sunrise and sunset in May in Simms?
How long on average sun shines in May in Simms?
What is the UV index intensity in May in Simms?
Average temperature in May
Simms, MT
- Average high temperature in May: 62.2°F
The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is December (29.5°F).
- Average low temperature in May: 41.9°F
The month with the highest average low temperature is August (56.7°F).
The coldest month (with the lowest average low temperature) is December (17.4°F).
Average pressure in May
Simms, MT
- Average pressure in May: 29.93"Hg
The months with the highest atmospheric pressure are January and December (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in May
Simms, MT
- Average wind speed in May: 8.1mph
The windiest months (with the highest average wind speed) are January and November (10.7mph).
The calmest month (with the lowest average wind speed) is August (7.3mph).
Average humidity in May
Simms, MT
- Average humidity in May: 59%
The month with the highest relative humidity is January (78%).
The month with the lowest relative humidity is August (41%).
Average rainfall in May
Simms, MT
- Average rainfall in May: 1.69"
The wettest month (with the highest rainfall) is June (2.05").
The driest months (with the least rainfall) are January and July (0.63").
Average rainfall days in May
Simms, MT
- Average rainfall days in May: 15.2 days
The month with the highest number of rainy days is May (15.2 days).
The month with the least rainy days is January (4.8 days).
Average snowfall in May
Simms, MT
- Average snowfall in May: 0.63"
The month with the highest snowfall is February (6.34").
The months with the least snowfall are June, July and August (0").
Average snowfall days in May
Simms, MT
- Average snowfall days in May: 1.2 days
The month with the highest number of snowfall days is February (14.4 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in May /
Average sunshine in May
Simms, 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 1min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The months with the least sunshine are January and December (Average sunshine: 5h and 24min).
Average sunshine days in May
Simms, MT
- Average sunshine days in May: 12.8 days
The month with the most sunshine days is September (18.8 days).
The month with the least sunshine days is April (10.3 days).
Average UV index in May
Simms, 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
Simms, MT
- Average cloud cover in May: 34
The month with the most cloud cover is February (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 14).
Average visibility in May
Simms, 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).
Simms, Montana, USA
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