May weather forecastMcAllister, MT
May
Weather in May
May, the last month of the spring in McAllister, is a cool month, with an average temperature fluctuating between 52.3°F (11.3°C) and 31.5°F (-0.3°C).Temperature
May's arrival coincides with a temperature rise, moving from April's icy 40.3°F (4.6°C) to a cool 52.3°F (11.3°C). McAllister's temperature tends to fall to an average low of 31.5°F (-0.3°C) during the nights of May.Humidity
In May, the average relative humidity is 73%.Rainfall
The month with the most rainfall is May, when the rain falls for 14.4 days and typically aggregates up to 2.36" (60mm) of precipitation.Snowfall
Months with snowfall are January through December. In McAllister, Montana, during May, snow falls for 12.8 days and regularly aggregates up to 9.21" (234mm) of snow. In McAllister, during the entire year, snow falls for 136.1 days and aggregates up to 86.93" (2208mm) of snow.Daylight
The average length of the day in May in McAllister is 14h and 55min.On the first day of May in McAllister, sunrise is at 6:13 am and sunset at 8:34 pm. On the last day of the month, sunrise is at 5:41 am and sunset at 9:07 pm MDT.
Sunshine
In McAllister, the average sunshine in May is 9.5h.UV index
In May, the average daily maximum UV index in McAllister is 3. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.Note: The UV index of 3 during May leads to these advisories:
Take necessary precautions - Defending against sun damage is advocated. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Stay sun-safe with clothing that is both closely woven and worn loosely. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
McAllister, MT
- Average high temperature in May: 52.3°F
The warmest month (with the highest average high temperature) is July (74.5°F).
The month with the lowest average high temperature is December (22.3°F).
- Average low temperature in May: 31.5°F
The month with the highest average low temperature is August (46°F).
The coldest month (with the lowest average low temperature) is December (7.7°F).
Average pressure in May
McAllister, MT
- Average pressure in May: 29.94"Hg
The month with the highest atmospheric pressure is January (30.22"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in May
McAllister, MT
- Average wind speed in May: 5.2mph
The windiest month (with the highest average wind speed) is January (7.1mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in May
McAllister, MT
- Average humidity in May: 73%
The month with the highest relative humidity is February (90%).
The month with the lowest relative humidity is August (50%).
Average rainfall in May
McAllister, MT
- Average rainfall in May: 2.36"
The wettest month (with the highest rainfall) is May (2.36").
The driest month (with the least rainfall) is December (0.75").
Average rainfall days in May
McAllister, MT
- Average rainfall days in May: 14.4 days
The month with the highest number of rainy days is June (16.5 days).
The month with the least rainy days is November (2.9 days).
Average snowfall in May
McAllister, MT
- Average snowfall in May: 9.21"
The month with the highest snowfall is April (14.76").
The month with the least snowfall is August (0.08").
Average snowfall days in May
McAllister, MT
- Average snowfall days in May: 12.8 days
The month with the highest number of snowfall days is April (19.9 days).
The month with the least snowfall days is August (0.3 days).
Average daylight in May /
Average sunshine in May
McAllister, MT
- Average daylight in May: 14h and 54min
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: 9h and 30min
The month with the most sunshine is July (Average sunshine: 11h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).
Average sunshine days in May
McAllister, MT
- Average sunshine days in May: 7.1 days
The month with the most sunshine days is January (16.3 days).
The month with the least sunshine days is April (6.9 days).
Average UV index in May
McAllister, 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
McAllister, MT
- Average cloud cover in May: 39
The month with the most cloud cover is February (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 17).
Average visibility in May
McAllister, MT
- Average visibility in May: 5mi
The months with the highest visibility are June, July, August, September and October (6mi).
The months with the lowest visibility are January, February and December (4mi).
