May weather forecastLustre, MT
May
Weather in May
May, the last month of the spring in Lustre, is a refreshing month, with an average temperature fluctuating between 47.3°F (8.5°C) and 65.8°F (18.8°C).Temperature
May's onset brings a rise in the average high-temperature, moving from a cool 52.3°F (11.3°C) in April to an enjoyable 65.8°F (18.8°C). Lustre, during the nights of May, experiences an average temperature drop to a frosty 47.3°F (8.5°C).Humidity
In Lustre, the average relative humidity in May is 53%.Rainfall
The month with the most rainfall is May, when the rain falls for 13.1 days and typically aggregates up to 1.89" (48mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 0.5 snowfall days, in May, Lustre aggregates 0.28" (7mm) of snow. In Lustre, during the entire year, snow falls for 63.4 days and aggregates up to 17.99" (457mm) of snow.Daylight
The average length of the day in May is 15h and 15min.On the first day of May, sunrise is at 5:42 am and sunset at 8:18 pm. On the last day of the month, sunrise is at 5:06 am and sunset at 8:56 pm MDT.
Sunshine
In Lustre, the average sunshine in May is 10h.UV index
In Lustre, the average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 5 during May translates into the following directions:
Take necessary precautions - Protection from skin and eye injury is mandatory. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Lustre, MT
- Average high temperature in May: 65.8°F
The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is February (23°F).
- Average low temperature in May: 47.3°F
The month with the highest average low temperature is July (63.7°F).
The coldest months (with the lowest average low temperature) are January and February (10.2°F).
Average pressure in May
Lustre, MT
- Average pressure in May: 29.92"Hg
The month with the highest atmospheric pressure is February (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).
Average wind speed in May
Lustre, MT
- Average wind speed in May: 10.6mph
The windiest month (with the highest average wind speed) is April (11.2mph).
The calmest month (with the lowest average wind speed) is February (8.8mph).
Average humidity in May
Lustre, MT
- Average humidity in May: 53%
The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is August (42%).
Average rainfall in May
Lustre, MT
- Average rainfall in May: 1.89"
The wettest month (with the highest rainfall) is May (1.89").
The driest month (with the least rainfall) is January (0.51").
Average rainfall days in May
Lustre, MT
- Average rainfall days in May: 13.1 days
The month with the highest number of rainy days is May (13.1 days).
The month with the least rainy days is February (3.8 days).
Average snowfall in May
Lustre, MT
- Average snowfall in May: 0.28"
The month with the highest snowfall is February (3.82").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Lustre, MT
- Average snowfall days in May: 0.5 days
The month with the highest number of snowfall days is December (13.6 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in May /
Average sunshine in May
Lustre, MT
- Average daylight in May: 15h and 12min
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 24min).
- Average sunshine in May: 10h and 0min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 4h and 24min).
Average sunshine days in May
Lustre, MT
- Average sunshine days in May: 15.4 days
The month with the most sunshine days is September (21.4 days).
The month with the least sunshine days is April (13.8 days).
Average UV index in May
Lustre, MT
- Average UV index in May: 5
The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in May
Lustre, MT
- Average cloud cover in May: 33
The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 16).
Average visibility in May
Lustre, 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).
