Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
The start of December signals a decrease in the average high-temperature, transitioning from a wintry 38.7°F (3.7°C) in November to a subzero cold 24.6°F (-4.1°C). During December, Lustre records an average temperature of 12.4°F (-10.9°C) at night.Humidity
In December, the average relative humidity is 84%.Rainfall
In Lustre, Montana, in December, during 4.5 rainfall days, 0.55" (14mm) of precipitation is typically accumulated. Throughout the year, there are 95.7 rainfall days, and 11.69" (297mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall in Lustre. In Lustre, during December, snow falls for 13.6 days and regularly aggregates up to 3.58" (91mm) of snow. Throughout the year, there are 63.4 snowfall days, and 17.99" (457mm) of snow is accumulated.Daylight
The month with the shortest days in Lustre, Montana, is December, with an average of 8h and 24min of daylight.On the first day of December, sunrise is at 7:34 am and sunset at 4:11 pm. On the last day of the month, sunrise is at 7:54 am and sunset at 4:18 pm MST.
Sunshine
In December, the average sunshine is 4.8h.UV index
December is the month with the lowest UV index in Lustre, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: In December, the maximum UV index of 1 suggests this advice:
Most individuals face no major issues with lengthy exposure to the sun, but children, infants, and individuals with fair skin always require protection. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Boost your sun resistance with garments that are densely woven yet spacious. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
Frequently asked questions
How cold is it in Lustre in December?
What is the average humidity in December in Lustre?
How much does it rain in Lustre in December?
How many days does it snow in December in Lustre?
What is the month with the shortest days in Lustre?
How many hours of daylight does Lustre have in December?
When are sunrise and sunset in December in Lustre?
How many hours of sunshine does Lustre have in December?
When is the lowest UV index in Lustre?
What is the UV index reading in December in Lustre?
Average temperature in December
Lustre, MT
- Average high temperature in December: 24.6°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 December: 12.4°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 December
Lustre, MT
- Average pressure in December: 30.13"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 December
Lustre, MT
- Average wind speed in December: 9.4mph
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 December
Lustre, MT
- Average humidity in December: 84%
The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is August (42%).
Average rainfall in December
Lustre, MT
- Average rainfall in December: 0.55"
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 December
Lustre, MT
- Average rainfall days in December: 4.5 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 December
Lustre, MT
- Average snowfall in December: 3.58"
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 December
Lustre, MT
- Average snowfall days in December: 13.6 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 December /
Average sunshine in December
Lustre, MT
- Average daylight in December: 8h and 2min
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 December: 4h and 5min
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 December
Lustre, MT
- Average sunshine days in December: 17.1 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 December
Lustre, MT
- Average UV index in December: 1
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 December
Lustre, MT
- Average cloud cover in December: 49
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 December
Lustre, MT
- Average visibility in December: 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).
Lustre, Montana, USA
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