May weather forecastMill Iron, MT
May
Weather in May
The last month of the spring, May, is a comfortable month in Mill Iron, Montana, with an average temperature ranging between min 45.3°F (7.4°C) and max 63.5°F (17.5°C).Temperature
In May, the meteorological conditions change with the average high-temperature moving from a fresh 51.8°F (11°C) in April to a comfortable 63.5°F (17.5°C). Mill Iron's average low-temperature during May nights is observed to be a frosty 45.3°F (7.4°C).Humidity
In May, the average relative humidity is 60%.Rainfall
May is the month with the most rainfall. Rain falls for 15.7 days and accumulates 2.6" (66mm) of precipitation.Snowfall
Months with snowfall are January through May, September through December. May is the last month it regularly snows. During 1.7 snowfall days, in May, Mill Iron aggregates 1.38" (35mm) of snow. Throughout the year, there are 62.4 snowfall days, and 21.97" (558mm) of snow is accumulated.Daylight
The average length of the day in May is 14h and 58min.On the first day of the month, sunrise is at 5:42 am and sunset at 8:05 pm. On the last day of May, sunrise is at 5:10 am and sunset at 8:39 pm MDT.
Sunshine
The average sunshine in May is 9.7h.UV index
In May, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum UV index, 5 during May, leads to the following recommendations:
Take precautions - Protection against sun damage is advised. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. During bright days, sunglasses that offer UVA and UVB defense are recommended. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Mill Iron, MT
- Average high temperature in May: 63.5°F
The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (26.1°F).
- Average low temperature in May: 45.3°F
The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (13.3°F).
Average pressure in May
Mill Iron, MT
- Average pressure in May: 29.91"Hg
The months with the highest atmospheric pressure are January and February (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in May
Mill Iron, MT
- Average wind speed in May: 11.1mph
The windiest months (with the highest average wind speed) are April and October (11.9mph).
The calmest months (with the lowest average wind speed) are July and August (10.1mph).
Average humidity in May
Mill Iron, MT
- Average humidity in May: 60%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is August (46%).
Average rainfall in May
Mill Iron, MT
- Average rainfall in May: 2.6"
The wettest month (with the highest rainfall) is May (2.6").
The driest months (with the least rainfall) are January and December (0.55").
Average rainfall days in May
Mill Iron, MT
- Average rainfall days in May: 15.7 days
The month with the highest number of rainy days is May (15.7 days).
The month with the least rainy days is January (3.1 days).
Average snowfall in May
Mill Iron, MT
- Average snowfall in May: 1.38"
The month with the highest snowfall is February (3.86").
The months with the least snowfall are June, July and August (0").
Average snowfall days in May
Mill Iron, MT
- Average snowfall days in May: 1.7 days
The month with the highest number of snowfall days is February (12 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in May /
Average sunshine in May
Mill Iron, MT
- Average daylight in May: 15h and 0min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in May: 9h and 42min
The months with the most sunshine are July and August (Average sunshine: 11h and 36min).
The months with the least sunshine are February and December (Average sunshine: 4h and 48min).
Average sunshine days in May
Mill Iron, MT
- Average sunshine days in May: 12.3 days
The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is June (11.9 days).
Average UV index in May
Mill Iron, MT
- Average UV index in May: 5
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in May
Mill Iron, MT
- Average cloud cover in May: 36
The month with the most cloud cover is February (Cloud cover 51).
The months with the least cloud cover are July and August (Cloud cover 18).
Average visibility in May
Mill Iron, 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).
