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
The shift into May is characterized by a rise in the average high-temperature, transitioning from April's frosty 47.8°F (8.8°C) to a comfortable 60.8°F (16°C). Proctor observes a dramatic plunge from daytime highs in May, settling at an average low-temperature of 36.7°F (2.6°C).Humidity
The average relative humidity in May is 67%.Rainfall
In Proctor, in May, during 14.1 rainfall days, 1.5" (38mm) of precipitation is typically accumulated. Throughout the year, there are 129.8 rainfall days, and 16.42" (417mm) of precipitation is accumulated.Snowfall
Months with snowfall in Proctor are January through June, September through December. In May, it is snowing for 2.3 days. Throughout May, 0.83" (21mm) of snow is accumulated. In Proctor, Montana, during the entire year, snow falls for 117.4 days and aggregates up to 58.62" (1489mm) of snow.Daylight
In May, the average length of the day in Proctor is 15h and 11min.On the first day of May, sunrise is at 6:17 am and sunset at 8:50 pm. On the last day of the month, sunrise is at 5:42 am and sunset at 9:27 pm MDT.
Sunshine
The average sunshine in May in Proctor is 10.1h.UV index
The average daily maximum UV index in May is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.Note: The UV index of 4 during May leads to these advisories:
Put precautions into practice - Protective measures against sun-induced damage are advised. Minimize direct exposure to the Sun during midday when its radiation is at its peak. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
Frequently asked questions
What are May temperatures in Proctor?
What is the average humidity in May in Proctor?
How many days does it rain in May in Proctor?
How many days does it snow in May in Proctor?
What is the average length of the day in May in Proctor?
When is the sunrise / sunset in May in Proctor?
How many hours of sunshine does Proctor have in May?
What is the UV index intensity in May in Proctor?
Average temperature in May
Proctor, MT
- Average high temperature in May: 60.8°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is December (27.1°F).
- Average low temperature in May: 36.7°F
The month with the highest average low temperature is July (48.4°F).
The coldest months (with the lowest average low temperature) are January and December (16.2°F).
Average pressure in May
Proctor, MT
- Average pressure in May: 29.96"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in May
Proctor, MT
- Average wind speed in May: 4.3mph
The windiest month (with the highest average wind speed) is April (4.7mph).
The calmest months (with the lowest average wind speed) are August and December (3.6mph).
Average humidity in May
Proctor, MT
- Average humidity in May: 67%
The month with the highest relative humidity is January (93%).
The months with the lowest relative humidity are July and August (52%).
Average rainfall in May
Proctor, MT
- Average rainfall in May: 1.5"
The wettest month (with the highest rainfall) is June (1.89").
The driest month (with the least rainfall) is July (0.59").
Average rainfall days in May
Proctor, MT
- Average rainfall days in May: 14.1 days
The month with the highest number of rainy days is April (15.9 days).
The month with the least rainy days is December (6.5 days).
Average snowfall in May
Proctor, MT
- Average snowfall in May: 0.83"
The month with the highest snowfall is December (12.36").
The months with the least snowfall are July and August (0").
Average snowfall days in May
Proctor, MT
- Average snowfall days in May: 2.3 days
The month with the highest number of snowfall days is January (22.3 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in May /
Average sunshine in May
Proctor, MT
- Average daylight in May: 15h and 1min
The month with the longest days is June (Average daylight: 16h and 0min).
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 42min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in May
Proctor, MT
- Average sunshine days in May: 14.5 days
The month with the most sunshine days is July (20.8 days).
The month with the least sunshine days is February (7.1 days).
Average UV index in May
Proctor, 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, November and December (UV index 1).
Average cloud cover in May
Proctor, MT
- Average cloud cover in May: 36
The month with the most cloud cover is January (Cloud cover 64).
The months with the least cloud cover are July and August (Cloud cover 15).
Average visibility in May
Proctor, 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 January (3mi).
Proctor, Montana, USA
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