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
The coldest period tends to be January, when average temperatures fluctuate between a high of 23°F (-5°C) and a low of 9.5°F (-12.5°C).Humidity
The most humid month is January, with an average relative humidity of 88%.Rainfall
January is the month with the least rainfall in Rock Rapids. Rain falls for 3.4 days and accumulates 0.71" (18mm) of precipitation.Snowfall
Months with snowfall in Rock Rapids are January through May, October through December. In Rock Rapids, Iowa, in January, during 11.3 snowfall days, 3.46" (88mm) of snow is typically accumulated. Throughout the year, there are 48.3 snowfall days, and 19.29" (490mm) of snow is accumulated.Daylight
In January, the average length of the day is 9h and 24min.On the first day of the month, sunrise is at 7:57 am and sunset at 4:58 pm. On the last day of January, sunrise is at 7:41 am and sunset at 5:34 pm CST.
Sunshine
With an average of 4h of sunshine, January has the least sunshine of the year.UV index
January is the month with the lowest UV index in Rock Rapids, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV rays for ordinary individuals.Note: In January, the average maximum UV index of 1 translates into the following recommendations:
Despite the majority tolerating prolonged sun exposure, those with sensitive skin, infants, and children demand continual protection. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest month in Rock Rapids?
How cold is January in Rock Rapids?
What is the most humid month in Rock Rapids?
What is the average humidity in January in Rock Rapids?
What is the driest month in Rock Rapids?
How much does it rain in Rock Rapids in January?
How much does it snow in Rock Rapids in January?
How many hours of daylight does Rock Rapids have in January?
What time are sunrise and sunset in January in Rock Rapids?
What is the month with the least sunshine in Rock Rapids?
How many hours of sunshine does Rock Rapids have in January?
What is the month with the lowest UV index in Rock Rapids?
What is the UV index intensity in January in Rock Rapids?
Average temperature in January
Rock Rapids, IA
- Average high temperature in January: 23°F
The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (23°F).
- Average low temperature in January: 9.5°F
The month with the highest average low temperature is July (62.8°F).
The coldest month (with the lowest average low temperature) is January (9.5°F).
Average pressure in January
Rock Rapids, IA
- 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 (29.86"Hg).
Average wind speed in January
Rock Rapids, IA
- Average wind speed in January: 10.4mph
The windiest month (with the highest average wind speed) is April (11.2mph).
The calmest month (with the lowest average wind speed) is July (7.8mph).
Average humidity in January
Rock Rapids, IA
- Average humidity in January: 88%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is October (67%).
Average rainfall in January
Rock Rapids, IA
- Average rainfall in January: 0.71"
The wettest month (with the highest rainfall) is June (3.43").
The driest month (with the least rainfall) is January (0.71").
Average rainfall days in January
Rock Rapids, IA
- Average rainfall days in January: 3.4 days
The month with the highest number of rainy days is June (17.3 days).
The month with the least rainy days is February (2.7 days).
Average snowfall in January
Rock Rapids, IA
- Average snowfall in January: 3.46"
The month with the highest snowfall is February (4.61").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Rock Rapids, IA
- Average snowfall days in January: 11.3 days
The month with the highest number of snowfall days is December (11.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Rock Rapids, IA
- Average daylight in January: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in January: 4h and 0min
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 0min).
Average sunshine days in January
Rock Rapids, IA
- Average sunshine days in January: 18.9 days
The month with the most sunshine days is November (20.1 days).
The month with the least sunshine days is June (10.1 days).
Average UV index in January
Rock Rapids, IA
- Average UV index in January: 1
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in January
Rock Rapids, IA
- Average cloud cover in January: 56
The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is July (Cloud cover 28).
Average visibility in January
Rock Rapids, IA
- 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).
Rock Rapids, Iowa, USA
Weather forecast for your location
2. Allow the app to use your location