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
Hammond notes the coldest temperatures in December, with a high average of 30.4°F (-0.9°C) and a low of 18.1°F (-7.7°C).Humidity
In December, the average relative humidity in Hammond is 78%.Rainfall
In Hammond, in December, during 3.5 rainfall days, 0.59" (15mm) of precipitation is typically accumulated. In Hammond, during the entire year, the rain falls for 100 days and collects up to 12.83" (326mm) of precipitation.Snowfall
Months with snowfall in Hammond are January through May, September through December. In December, it is snowing for 9.4 days. Throughout December, 2.95" (75mm) of snow is accumulated. Throughout the year, there are 52.1 snowfall days, and 23.54" (598mm) of snow is accumulated.Daylight
With an average of 8h and 48min of daylight, December has the shortest days of the year.On the first day of December in Hammond, sunrise is at 7:19 am and sunset at 4:18 pm. On the last day of the month, sunrise is at 7:38 am and sunset at 4:27 pm MST.
Sunshine
In Hammond, the average sunshine in December is 5.8h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for average individuals.Note: The maximum daily UV index, 2 in December, converts into the following recommendations:
Prolonged sun exposure should always be prevented in babies, children, and those with sensitive skin. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest time of year in Hammond?
How cold is it in Hammond in December?
What is the average humidity in December in Hammond?
How many days does it rain in December in Hammond?
How much does it snow in Hammond in December?
What is the month with the shortest days in Hammond?
What is the average length of the day in December in Hammond?
What time are sunrise and sunset in December in Hammond?
How long on average sun shines in December in Hammond?
When is the lowest UV index in Hammond?
How high is the UV index in December in Hammond?
Average temperature in December
Hammond, MT
- Average high temperature in December: 30.4°F
The warmest month (with the highest average high temperature) is July (85.8°F).
The month with the lowest average high temperature is December (30.4°F).
- Average low temperature in December: 18.1°F
The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is February (17.1°F).
Average pressure in December
Hammond, MT
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in December
Hammond, MT
- Average wind speed in December: 10.1mph
The windiest months (with the highest average wind speed) are January and October (10.4mph).
The calmest month (with the lowest average wind speed) is August (8.3mph).
Average humidity in December
Hammond, MT
- Average humidity in December: 78%
The month with the highest relative humidity is January (80%).
The month with the lowest relative humidity is August (47%).
Average rainfall in December
Hammond, MT
- Average rainfall in December: 0.59"
The wettest month (with the highest rainfall) is May (2.05").
The driest month (with the least rainfall) is January (0.43").
Average rainfall days in December
Hammond, MT
- Average rainfall days in December: 3.5 days
The month with the highest number of rainy days is May (14.3 days).
The month with the least rainy days is January (2.8 days).
Average snowfall in December
Hammond, MT
- Average snowfall in December: 2.95"
The month with the highest snowfall is April (4.88").
The months with the least snowfall are June, July and August (0").
Average snowfall days in December
Hammond, MT
- Average snowfall days in December: 9.4 days
The month with the highest number of snowfall days is February (10.3 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Hammond, MT
- Average daylight in December: 8h and 5min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in December: 5h and 5min
The month with the most sunshine is August (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 5h and 30min).
Average sunshine days in December
Hammond, MT
- Average sunshine days in December: 19.5 days
The month with the most sunshine days is November (21.3 days).
The month with the least sunshine days is April (12.6 days).
Average UV index in December
Hammond, MT
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Hammond, MT
- Average cloud cover in December: 40
The month with the most cloud cover is February (Cloud cover 42).
The month with the least cloud cover is August (Cloud cover 15).
Average visibility in December
Hammond, 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).
Hammond, Montana, USA
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