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
During the coldest month, January, temperatures average a high of 38.8°F (3.8°C) and a low of 23°F (-5°C).Humidity
The average relative humidity in January in Riley is 71%.Rainfall
January is the month with the least rainfall. Rain falls for 3.7 days and accumulates 0.63" (16mm) of precipitation.Snowfall
January through April, October through December are months with snowfall. In Riley, in January, snow falls for 4.3 days, with typically accumulated 1.34" (34mm) of snow. In Riley, Kansas, during the entire year, snow falls for 17.5 days and aggregates up to 7.32" (186mm) of snow.Daylight
In January, the average length of the day in Riley is 9h and 47min.On the first day of the month, sunrise is at 7:46 am and sunset at 5:14 pm. On the last day of January, sunrise is at 7:35 am and sunset at 5:46 pm CST.
Sunshine
In Riley, the average sunshine in January is 5.8h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Riley. A UV Index of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for average individuals.Note: A daily maximum UV index of 2 in January translates into the following instructions:
Although the majority can endure up to an hour in the sun without burns, children always require sun protection. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Opt for tightly woven and loose clothing to enhance protection from the Sun. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What part of the year is the coldest in Riley?
How cold is January in Riley?
What is the average humidity in January in Riley?
What is the driest month in Riley?
How much does it rain in Riley in January?
How much does it snow in Riley in January?
What is the average length of the day in January in Riley?
When are sunrise and sunset in January in Riley?
How many hours of sunshine does Riley have in January?
What is the month with the lowest UV index in Riley?
What is the UV index intensity in January in Riley?
Average temperature in January
Riley, KS
- Average high temperature in January: 38.8°F
The warmest month (with the highest average high temperature) is July (89.6°F).
The month with the lowest average high temperature is January (38.8°F).
- Average low temperature in January: 23°F
The month with the highest average low temperature is July (69.8°F).
The coldest month (with the lowest average low temperature) is January (23°F).
Average pressure in January
Riley, KS
- 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 (29.85"Hg).
Average wind speed in January
Riley, KS
- Average wind speed in January: 10.2mph
The windiest month (with the highest average wind speed) is April (11.8mph).
The calmest month (with the lowest average wind speed) is August (8.6mph).
Average humidity in January
Riley, KS
- Average humidity in January: 71%
The month with the highest relative humidity is May (74%).
The month with the lowest relative humidity is October (64%).
Average rainfall in January
Riley, KS
- Average rainfall in January: 0.63"
The wettest month (with the highest rainfall) is May (3.98").
The driest month (with the least rainfall) is January (0.63").
Average rainfall days in January
Riley, KS
- Average rainfall days in January: 3.7 days
The month with the highest number of rainy days is May (14.3 days).
The month with the least rainy days is January (3.7 days).
Average snowfall in January
Riley, KS
- Average snowfall in January: 1.34"
The month with the highest snowfall is February (2.24").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in January
Riley, KS
- Average snowfall days in January: 4.3 days
The month with the highest number of snowfall days is February (4.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Riley, KS
- Average daylight in January: 9h and 5min
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 30min).
- Average sunshine in January: 5h and 5min
The months with the most sunshine are June and July (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).
Average sunshine days in January
Riley, KS
- Average sunshine days in January: 23.5 days
The month with the most sunshine days is January (23.5 days).
The month with the least sunshine days is May (13.8 days).
Average UV index in January
Riley, KS
- Average UV index in January: 2
The month with the highest UV index is June (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in January
Riley, KS
- Average cloud cover in January: 36
The month with the most cloud cover is March (Cloud cover 41).
The month with the least cloud cover is June (Cloud cover 22).
Average visibility in January
Riley, KS
- 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).
Riley, Kansas, USA
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