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
With its high average temperature of 33.6°F (0.9°C) and a low of 20.7°F (-6.3°C), January is regarded as the coldest month.Humidity
In January, the average relative humidity in Sumner is 77%.Rainfall
In Sumner, in January, during 4.2 rainfall days, 0.47" (12mm) of precipitation is typically accumulated. In Sumner, during the entire year, the rain falls for 101.9 days and collects up to 10.59" (269mm) of precipitation.Snowfall
Months with snowfall in Sumner are January through April, October through December. The month with the most snowfall in Sumner is January, when snow falls for 6.5 days and typically aggregates up to 1.02" (26mm) of snow.Daylight
In Sumner, the average length of the day in January is 9h and 45min.On the first day of the month, sunrise is at 7:33 am and sunset at 4:59 pm. On the last day of January, sunrise is at 7:21 am and sunset at 5:31 pm CST.
Sunshine
January has the least sunshine of the year, with an average of 4.6h of sunshine.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Sumner. A UV Index estimate of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: An average UV index of 2 in January transforms into this advice:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
Frequently asked questions
What is the coldest month in Sumner?
How cold is it in Sumner in January?
What is the average humidity in January in Sumner?
How much does it rain in Sumner in January?
When does it snow the most in Sumner?
How much does it snow in Sumner in January?
What is the average length of the day in January in Sumner?
When are sunrise and sunset in January in Sumner?
What is the month with the least sunshine in Sumner?
How many hours of sunshine does Sumner have in January?
What are the months with the lowest UV index in Sumner?
What is the UV index intensity in January in Sumner?
Average temperature in January
Sumner, MO
- Average high temperature in January: 33.6°F
The warmest month (with the highest average high temperature) is July (84.6°F).
The month with the lowest average high temperature is January (33.6°F).
- Average low temperature in January: 20.7°F
The month with the highest average low temperature is July (67.3°F).
The coldest month (with the lowest average low temperature) is January (20.7°F).
Average pressure in January
Sumner, MO
- Average pressure in January: 30.16"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in January
Sumner, MO
- Average wind speed in January: 9.9mph
The windiest month (with the highest average wind speed) is March (10.1mph).
The calmest months (with the lowest average wind speed) are July and August (6.5mph).
Average humidity in January
Sumner, MO
- Average humidity in January: 77%
The month with the highest relative humidity is June (81%).
The month with the lowest relative humidity is October (72%).
Average rainfall in January
Sumner, MO
- Average rainfall in January: 0.47"
The wettest months (with the highest rainfall) are May and June (1.46").
The driest month (with the least rainfall) is December (0.43").
Average rainfall days in January
Sumner, MO
- Average rainfall days in January: 4.2 days
The month with the highest number of rainy days is May (12.3 days).
The month with the least rainy days is January (4.2 days).
Average snowfall in January
Sumner, MO
- Average snowfall in January: 1.02"
The month with the highest snowfall is January (1.02").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in January
Sumner, MO
- Average snowfall days in January: 6.5 days
The month with the highest number of snowfall days is January (6.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Sumner, MO
- Average daylight in January: 9h and 4min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in January: 4h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).
Average sunshine days in January
Sumner, MO
- Average sunshine days in January: 21.8 days
The month with the most sunshine days is December (23.5 days).
The month with the least sunshine days is May (13.8 days).
Average UV index in January
Sumner, MO
- Average UV index in January: 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 January
Sumner, MO
- Average cloud cover in January: 49
The month with the most cloud cover is January (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 27).
Average visibility in January
Sumner, MO
- Average visibility in January: 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).
Sumner, Missouri, USA
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