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 average high temperatures of 46.9°F (8.3°C) and lows of 30.2°F (-1°C), January is the coldest month.Humidity
The average relative humidity in January is 64%.Rainfall
In Sumner, in January, during 4.2 rainfall days, 0.94" (24mm) of precipitation is typically accumulated. Throughout the year, there are 119.3 rainfall days, and 23.27" (591mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through March, November and December. In Sumner, during January, snow falls for 2.2 days and regularly aggregates up to 0.87" (22mm) of snow. In Sumner, during the entire year, snow falls for 7.8 days and aggregates up to 2.99" (76mm) of snow.Daylight
In January, the average length of the day is 10h and 1min.On the first day of the month, sunrise is at 7:39 am and sunset at 5:24 pm. On the last day of January, sunrise is at 7:30 am and sunset at 5:53 pm CST.
Sunshine
In January, the average sunshine is 6.3h.UV index
In January, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: In January, the UV index of 3 transforms into the following advice:
Prioritize safety - Recommendations to avert sunburn are shared. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Stay sun-safe with clothing that is both closely woven and worn loosely. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest month?
What is the temperature in January in Sumner?
What is the average humidity in January?
How much does it rain in January?
How much does it snow in January?
How many hours of daylight does Sumner have in January?
When are sunrise and sunset in January?
How many hours of sunshine does Sumner have in January?
What is the UV index reading in January?
Average temperature in January
Sumner, OK
- Average high temperature in January: 46.9°F
The warmest month (with the highest average high temperature) is July (93.9°F).
The month with the lowest average high temperature is January (46.9°F).
- Average low temperature in January: 30.2°F
The month with the highest average low temperature is July (73.4°F).
The coldest month (with the lowest average low temperature) is January (30.2°F).
Average pressure in January
Sumner, OK
- 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 (29.87"Hg).
Average wind speed in January
Sumner, OK
- Average wind speed in January: 10.3mph
The windiest month (with the highest average wind speed) is April (11.6mph).
The calmest month (with the lowest average wind speed) is August (8.3mph).
Average humidity in January
Sumner, OK
- Average humidity in January: 64%
The month with the highest relative humidity is May (74%).
The month with the lowest relative humidity is August (61%).
Average rainfall in January
Sumner, OK
- Average rainfall in January: 0.94"
The wettest month (with the highest rainfall) is May (4.21").
The driest month (with the least rainfall) is December (0.83").
Average rainfall days in January
Sumner, OK
- Average rainfall days in January: 4.2 days
The month with the highest number of rainy days is May (14.5 days).
The month with the least rainy days is January (4.2 days).
Average snowfall in January
Sumner, OK
- Average snowfall in January: 0.87"
The month with the highest snowfall is February (1.38").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in January
Sumner, OK
- Average snowfall days in January: 2.2 days
The month with the highest number of snowfall days is February (2.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in January /
Average sunshine in January
Sumner, OK
- Average daylight in January: 10h and 0min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in January: 6h and 2min
The month with the most sunshine is August (Average sunshine: 11h and 18min).
The month with the least sunshine is December (Average sunshine: 6h and 6min).
Average sunshine days in January
Sumner, OK
- Average sunshine days in January: 23.3 days
The month with the most sunshine days is December (23.4 days).
The month with the least sunshine days is May (13.9 days).
Average UV index in January
Sumner, OK
- Average UV index in January: 3
The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in January
Sumner, OK
- Average cloud cover in January: 28
The month with the most cloud cover is March (Cloud cover 37).
The months with the least cloud cover are June and August (Cloud cover 19).
Average visibility in January
Sumner, OK
- 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, Oklahoma, USA
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