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
Grass Range's transition into May sees a rise in the average high-temperature, advancing from a frosty 47.8°F (8.8°C) in April to a mild 58.5°F (14.7°C). Nighttime temperatures in May average to a wintry 40.1°F (4.5°C) in Grass Range, Montana.Humidity
In Grass Range, the average relative humidity in May is 65%.Rainfall
The month with the most rainfall in Grass Range is May, when the rain falls for 19.3 days and typically aggregates up to 3.39" (86mm) of precipitation.Snowfall
Months with snowfall in Grass Range are January through June, September through December. In Grass Range, in May, during 2.4 snowfall days, 2.48" (63mm) of snow is typically accumulated. Throughout the year, in Grass Range, Montana, there are 83.4 snowfall days, and 45.51" (1156mm) of snow is accumulated.Daylight
The average length of the day in May in Grass Range is 15h and 5min.On the first day of May, sunrise is at 5:58 am and sunset at 8:26 pm. On the last day of the month, sunrise is at 5:23 am and sunset at 9:02 pm MDT.
Sunshine
In Grass Range, the average sunshine in May is 10h.UV index
In Grass Range, the average daily maximum UV index in May is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: In May, an average UV index of 4 transforms into the following instructions:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. When the Sun is at its strongest around midday, find shade and limit exposure. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Grass Range in May?
What is the average humidity in May in Grass Range?
What is the rainiest month in Grass Range?
How many days does it rain in May in Grass Range?
How much does it snow in Grass Range in May?
What is the average length of the day in May in Grass Range?
What time are sunrise and sunset in May in Grass Range?
How many hours of sunshine does Grass Range have in May?
What is the UV index reading in May in Grass Range?
Average temperature in May
Grass Range, MT
- Average high temperature in May: 58.5°F
The warmest month (with the highest average high temperature) is July (78.8°F).
The months with the lowest average high temperature are February and December (29.1°F).
- Average low temperature in May: 40.1°F
The month with the highest average low temperature is August (54.5°F).
The coldest month (with the lowest average low temperature) is February (15.3°F).
Average pressure in May
Grass Range, MT
- Average pressure in May: 29.92"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in May
Grass Range, MT
- Average wind speed in May: 8.8mph
The windiest months (with the highest average wind speed) are January, April and October (9.9mph).
The calmest month (with the lowest average wind speed) is August (7.4mph).
Average humidity in May
Grass Range, MT
- Average humidity in May: 65%
The month with the highest relative humidity is February (79%).
The month with the lowest relative humidity is August (47%).
Average rainfall in May
Grass Range, MT
- Average rainfall in May: 3.39"
The wettest month (with the highest rainfall) is May (3.39").
The driest month (with the least rainfall) is December (0.71").
Average rainfall days in May
Grass Range, MT
- Average rainfall days in May: 19.3 days
The month with the highest number of rainy days is May (19.3 days).
The month with the least rainy days is January (5.4 days).
Average snowfall in May
Grass Range, MT
- Average snowfall in May: 2.48"
The month with the highest snowfall is April (9.13").
The months with the least snowfall are July and August (0").
Average snowfall days in May
Grass Range, MT
- Average snowfall days in May: 2.4 days
The month with the highest number of snowfall days is February (15.2 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in May /
Average sunshine in May
Grass Range, MT
- Average daylight in May: 15h and 1min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in May: 10h and 0min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 30min).
Average sunshine days in May
Grass Range, MT
- Average sunshine days in May: 8.9 days
The month with the most sunshine days is September (19.3 days).
The month with the least sunshine days is April (8.3 days).
Average UV index in May
Grass Range, 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, April, October, November and December (UV index 2).
Average cloud cover in May
Grass Range, MT
- Average cloud cover in May: 36
The month with the most cloud cover is February (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 16).
Average visibility in May
Grass Range, 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).
Grass Range, Montana, USA
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