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 beginning of May signals a rise in the average high-temperature, moving from a chilly 46.6°F (8.1°C) in April to a moderate 59.2°F (15.1°C). Greenough witnesses a consistent, sharp contrast from the daytime highs, with an average low-temperature of 33.4°F (0.8°C) throughout May.Humidity
The average relative humidity in May in Greenough is 67%.Rainfall
In Greenough, in May, it is raining for 6.3 days, with typically 0.28" (7mm) of accumulated precipitation. Throughout the year, there are 46.4 rainfall days, and 2.4" (61mm) of precipitation is accumulated.Snowfall
Months with snowfall in Greenough are January through June, September through December. In Greenough, in May, during 0.5 snowfall days, 0.16" (4mm) of snow is typically accumulated. Throughout the year, there are 31.4 snowfall days, and 7.64" (194mm) of snow is accumulated.Daylight
In May, the average length of the day in Greenough is 15h and 5min.On the first day of the month, sunrise is at 6:16 am and sunset at 8:44 pm. On the last day of May, in Greenough, Montana, sunrise is at 5:42 am and sunset at 9:20 pm MDT.
Sunshine
In Greenough, the average sunshine in May is 10.9h.UV index
The average daily maximum UV index in May in Greenough is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the average person.Note: The maximum daily UV index, 4 in May, converts into the following recommendations:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Frequently asked questions
What are May temperatures in Greenough?
What is the average humidity in May in Greenough?
How many days does it rain in May in Greenough?
How many days does it snow in May in Greenough?
How many hours of daylight does Greenough have in May?
What time are sunrise and sunset in May in Greenough?
How many hours of sunshine does Greenough have in May?
What is the UV index reading in May in Greenough?
Average temperature in May
Greenough, MT
- Average high temperature in May: 59.2°F
The warmest month (with the highest average high temperature) is July (79.2°F).
The month with the lowest average high temperature is December (26.1°F).
- Average low temperature in May: 33.4°F
The months with the highest average low temperature are July and August (45.5°F).
The coldest month (with the lowest average low temperature) is December (12.2°F).
Average pressure in May
Greenough, MT
- Average pressure in May: 29.96"Hg
The month with the highest atmospheric pressure is January (30.18"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in May
Greenough, MT
- Average wind speed in May: 5.4mph
The windiest month (with the highest average wind speed) is April (6mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in May
Greenough, MT
- Average humidity in May: 67%
The month with the highest relative humidity is January (91%).
The months with the lowest relative humidity are July and August (51%).
Average rainfall in May
Greenough, MT
- Average rainfall in May: 0.28"
The wettest month (with the highest rainfall) is June (0.43").
The driest month (with the least rainfall) is December (0.08").
Average rainfall days in May
Greenough, MT
- Average rainfall days in May: 6.3 days
The month with the highest number of rainy days is April (6.8 days).
The month with the least rainy days is January (2.3 days).
Average snowfall in May
Greenough, MT
- Average snowfall in May: 0.16"
The month with the highest snowfall is February (1.57").
The months with the least snowfall are July and August (0").
Average snowfall days in May
Greenough, MT
- Average snowfall days in May: 0.5 days
The month with the highest number of snowfall days is February (5.8 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in May /
Average sunshine in May
Greenough, 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 5min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 5h and 12min).
Average sunshine days in May
Greenough, MT
- Average sunshine days in May: 23 days
The month with the most sunshine days is July (27 days).
The month with the least sunshine days is April (21.9 days).
Average UV index in May
Greenough, MT
- Average UV index in May: 4
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in May
Greenough, MT
- Average cloud cover in May: 30
The months with the most cloud cover are January and February (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 12).
Average visibility in May
Greenough, MT
- Average visibility in May: 6mi
The months with the highest visibility are April, May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February and December (4mi).
Greenough, Montana, USA
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