Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average snowfall in January
- Average snowfall days in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
Tattnall starts January with an average high-temperature of a still subzero cold 24.6°F (-4.1°C), a minor shift from December's 24.8°F (-4°C). During January, the temperature is averaged to a low of 10.8°F (-11.8°C) at night.Humidity
The most humid month is January, with an average relative humidity of 85%.Rainfall
In Tattnall, in January, during 3.9 rainfall days, 0.51" (13mm) of precipitation is typically accumulated. Throughout the year, there are 91.8 rainfall days, and 10.63" (270mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall in Tattnall. In January, it is snowing for 12.3 days. Throughout January, 3.19" (81mm) of snow is accumulated. Throughout the year, there are 56.9 snowfall days, and 17.95" (456mm) of snow is accumulated.Daylight
In Tattnall, the average length of the day in January is 8h and 50min.On the first day of the month, sunrise is at 8:02 am and sunset at 4:24 pm. On the last day of January, sunrise is at 7:40 am and sunset at 5:06 pm MST.
Sunshine
In January, the average sunshine is 4.9h.UV index
The months with the lowest UV index are January through March, October through December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: A typical high UV index of 2 in January suggests the following recommendations:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in January?
What is the most humid month?
What is the average humidity in January?
How much does it rain in Tattnall in January?
How many days does it snow in January?
What is the average length of the day in January?
When is the sunrise / sunset in January in Tattnall?
How long on average sun shines in January?
What are the months with the lowest UV index?
How high is the UV index in January?
Average temperature in January
Tattnall, MT
- Average high temperature in January: 24.6°F
The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is February (24.4°F).
- Average low temperature in January: 10.8°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is February (10°F).
Average pressure in January
Tattnall, MT
- Average pressure in January: 30.13"Hg
The month with the highest atmospheric pressure is February (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).
Average wind speed in January
Tattnall, MT
- Average wind speed in January: 9.2mph
The windiest month (with the highest average wind speed) is April (11.3mph).
The calmest month (with the lowest average wind speed) is February (8.3mph).
Average humidity in January
Tattnall, MT
- Average humidity in January: 85%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is August (41%).
Average rainfall in January
Tattnall, MT
- Average rainfall in January: 0.51"
The wettest month (with the highest rainfall) is May (1.73").
The driest month (with the least rainfall) is February (0.43").
Average rainfall days in January
Tattnall, MT
- Average rainfall days in January: 3.9 days
The month with the highest number of rainy days is May (12.7 days).
The month with the least rainy days is February (3.3 days).
Average snowfall in January
Tattnall, MT
- Average snowfall in January: 3.19"
The month with the highest snowfall is December (3.43").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Tattnall, MT
- Average snowfall days in January: 12.3 days
The month with the highest number of snowfall days is January (12.3 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in January /
Average sunshine in January
Tattnall, MT
- Average daylight in January: 8h and 5min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in January: 4h and 5min
The month with the most sunshine is July (Average sunshine: 11h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in January
Tattnall, MT
- Average sunshine days in January: 17.6 days
The month with the most sunshine days is October (21 days).
The month with the least sunshine days is April (15.4 days).
Average UV index in January
Tattnall, MT
- Average UV index in January: 2
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in January
Tattnall, MT
- Average cloud cover in January: 48
The month with the most cloud cover is February (Cloud cover 50).
The months with the least cloud cover are July and August (Cloud cover 18).
Average visibility in January
Tattnall, MT
- Average visibility in January: 5mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Tattnall, Montana, USA
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