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
January is the month when Rock Island experiences its coldest temperatures, averaging a high of 48°F (8.9°C) and a low of 31.6°F (-0.2°C).Humidity
The average relative humidity in January is 72%.Rainfall
January is the month with the least rainfall. Rain falls for 9.5 days and accumulates 2.05" (52mm) of precipitation.Snowfall
Months with snowfall are January through March, November and December. In Rock Island, in January, during 1.3 snowfall days, 0.75" (19mm) of snow is typically accumulated. In Rock Island, during the entire year, snow falls for 5.1 days and aggregates up to 3.15" (80mm) of snow.Daylight
In January, the average length of the day is 10h and 7min.On the first day of January in Rock Island, sunrise is at 7:26 am and sunset at 5:16 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 5:44 pm CST.
Sunshine
The months with the least sunshine are January and December, with an average of 5.5h of sunshine.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 exposure to the Sun's UV radiation for the ordinary person.Note: An average maximum UV index of 3 in January leads to these recommendations:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What time of the year is the coldest?
What are January temperatures in Rock Island?
What is the average humidity in January?
What is the driest month?
How much does it rain in January?
How many days does it snow in January?
How many hours of daylight does Rock Island have in January?
What time are sunrise and sunset in January?
What are the months with the least sunshine?
How many hours of sunshine does Rock Island have in January?
What is the UV index reading in January?
Average temperature in January
Rock Island, OK
- Average high temperature in January: 48°F
The warmest month (with the highest average high temperature) is July (93.4°F).
The month with the lowest average high temperature is January (48°F).
- Average low temperature in January: 31.6°F
The month with the highest average low temperature is July (70.7°F).
The coldest month (with the lowest average low temperature) is January (31.6°F).
Average pressure in January
Rock Island, OK
- Average pressure in January: 30.17"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in January
Rock Island, OK
- Average wind speed in January: 6.7mph
The windiest month (with the highest average wind speed) is April (7.8mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in January
Rock Island, OK
- Average humidity in January: 72%
The month with the highest relative humidity is May (77%).
The month with the lowest relative humidity is August (69%).
Average rainfall in January
Rock Island, OK
- Average rainfall in January: 2.05"
The wettest month (with the highest rainfall) is May (4.49").
The driest month (with the least rainfall) is January (2.05").
Average rainfall days in January
Rock Island, OK
- Average rainfall days in January: 9.5 days
The month with the highest number of rainy days is March (15.4 days).
The month with the least rainy days is November (8.8 days).
Average snowfall in January
Rock Island, OK
- Average snowfall in January: 0.75"
The month with the highest snowfall is February (1.06").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in January
Rock Island, OK
- Average snowfall days in January: 1.3 days
The month with the highest number of snowfall days is February (1.9 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
Rock Island, OK
- Average daylight in January: 10h and 1min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in January: 5h and 3min
The months with the most sunshine are July and August (Average sunshine: 10h and 48min).
The months with the least sunshine are January and December (Average sunshine: 5h and 30min).
Average sunshine days in January
Rock Island, OK
- Average sunshine days in January: 19.1 days
The months with the most sunshine days are November and December (19.3 days).
The month with the least sunshine days is July (13.3 days).
Average UV index in January
Rock Island, OK
- Average UV index in January: 3
The months with the highest UV index are June and July (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in January
Rock Island, OK
- Average cloud cover in January: 38
The month with the most cloud cover is February (Cloud cover 45).
The month with the least cloud cover is August (Cloud cover 24).
Average visibility in January
Rock Island, 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).
Rock Island, Oklahoma, USA
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