May weather forecastGeyser, MT
May
Weather in May
The last month of the spring, May, is a cool month in Geyser, Montana, with an average temperature fluctuating between 53.2°F (11.8°C) and 34.2°F (1.2°C).Temperature
May's arrival is marked by an increase in the average high-temperature, moving from a cold 42.1°F (5.6°C) in April to a fresh 53.2°F (11.8°C). Geyser's May nights cool down to an average low-temperature of 34.2°F (1.2°C).Humidity
In Geyser, Montana, the average relative humidity in May is 73%.Rainfall
May is the month with the most rainfall. Rain falls for 20.2 days and accumulates 4.69" (119mm) of precipitation.Snowfall
Months with snowfall are January through June, August through December. In Geyser, in May, during 10.3 snowfall days, 11.1" (282mm) of snow is typically accumulated. In Geyser, Montana, during the entire year, snow falls for 137.4 days and aggregates up to 110.08" (2796mm) of snow.Daylight
In May, the average length of the day is 15h and 7min.On the first day of May, sunrise is at 6:04 am and sunset at 8:33 pm. On the last day of the month, sunrise is at 5:29 am and sunset at 9:09 pm MDT.
Sunshine
The average sunshine in May in Geyser is 9.2h.UV index
In Geyser, Montana, the average daily maximum UV index in May is 3. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 3 in May interprets into the following recommendations:
Undertake precautions - Obligation exists to protect against skin and eye damage. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Geyser, MT
- Average high temperature in May: 53.2°F
The warmest month (with the highest average high temperature) is July (73.9°F).
The month with the lowest average high temperature is December (24.3°F).
- Average low temperature in May: 34.2°F
The months with the highest average low temperature are July and August (48.2°F).
The coldest month (with the lowest average low temperature) is December (11.7°F).
Average pressure in May
Geyser, 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
Geyser, MT
- Average wind speed in May: 6.8mph
The windiest month (with the highest average wind speed) is January (9.8mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity in May
Geyser, MT
- Average humidity in May: 73%
The month with the highest relative humidity is February (87%).
The month with the lowest relative humidity is August (53%).
Average rainfall in May
Geyser, MT
- Average rainfall in May: 4.69"
The wettest month (with the highest rainfall) is May (4.69").
The driest month (with the least rainfall) is December (1.26").
Average rainfall days in May
Geyser, MT
- Average rainfall days in May: 20.2 days
The month with the highest number of rainy days is June (20.9 days).
The month with the least rainy days is February (5.2 days).
Average snowfall in May
Geyser, MT
- Average snowfall in May: 11.1"
The month with the highest snowfall is April (19.29").
The month with the least snowfall is July (0").
Average snowfall days in May
Geyser, MT
- Average snowfall days in May: 10.3 days
The month with the highest number of snowfall days is March (20.3 days).
The month with the least snowfall days is July (0 days).
Average daylight in May /
Average sunshine in May
Geyser, MT
- Average daylight in May: 15h and 6min
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 36min).
- Average sunshine in May: 9h and 12min
The month with the most sunshine is July (Average sunshine: 11h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in May
Geyser, MT
- Average sunshine days in May: 4.7 days
The month with the most sunshine days is September (15.5 days).
The month with the least sunshine days is May (4.7 days).
Average UV index in May
Geyser, MT
- Average UV index in May: 3
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January and February (UV index 1).
Average cloud cover in May
Geyser, MT
- Average cloud cover in May: 43
The month with the most cloud cover is February (Cloud cover 57).
The months with the least cloud cover are July and August (Cloud cover 18).
Average visibility in May
Geyser, MT
- Average visibility in May: 6mi
The months with the highest visibility are May, June, July, August, September and October (6mi).
The month with the lowest visibility is February (4mi).





