January weather forecastCastle Grove, IA
January
Weather in January
January, the same as December, in Castle Grove, Iowa, is another subzero cold winter month, with an average temperature ranging between min 13.3°F (-10.4°C) and max 25.2°F (-3.8°C).Temperature
January is the month when Castle Grove sees the lowest average temperatures, with a high of 25.2°F (-3.8°C) and a low of 13.3°F (-10.4°C).Humidity
The months with the highest humidity are January and February, with an average relative humidity of 86%.Rainfall
The months with the least rainfall in Castle Grove are January and February Rain falls for 5.2 days and accumulates 1.26" (32mm) of rain.Snowfall
January through April, October through December are months with snowfall. January is the month with the most snowfall. Snow falls for 12.1 days and accumulates 5.04" (128mm) of snow.Daylight
The average length of the day in January is 9h and 31min.On the first day of January, sunrise is at 7:34 am and sunset at 4:43 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 5:17 pm CST.
Sunshine
January has the least sunshine of the year, with an average of 3.8h of sunshine.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for the average person.Note: In January, a daily UV index of 1 turns into the following recommendations:
Sun exposure does not present considerable issues for many, yet infants, fair-skinned people, and children necessitate constant protection. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Castle Grove, IA
- Average high temperature in January: 25.2°F
The warmest month (with the highest average high temperature) is July (80.1°F).
The month with the lowest average high temperature is January (25.2°F).
- Average low temperature in January: 13.3°F
The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (13.3°F).
Average pressure in January
Castle Grove, IA
- Average pressure in January: 30.13"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in January
Castle Grove, IA
- Average wind speed in January: 10.4mph
The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest month (with the lowest average wind speed) is August (6.9mph).
Average humidity in January
Castle Grove, IA
- Average humidity in January: 86%
The months with the highest relative humidity are January and February (86%).
The month with the lowest relative humidity is October (74%).
Average rainfall in January
Castle Grove, IA
- Average rainfall in January: 1.26"
The wettest month (with the highest rainfall) is May (4.25").
The driest months (with the least rainfall) are January and February (1.26").
Average rainfall days in January
Castle Grove, IA
- Average rainfall days in January: 5.2 days
The month with the highest number of rainy days is May (18.6 days).
The month with the least rainy days is January (5.2 days).
Average snowfall in January
Castle Grove, IA
- Average snowfall in January: 5.04"
The month with the highest snowfall is January (5.04").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in January
Castle Grove, IA
- Average snowfall days in January: 12.1 days
The month with the highest number of snowfall days is January (12.1 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
Castle Grove, IA
- Average daylight in January: 9h and 30min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in January: 3h and 48min
The months with the most sunshine are July and August (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in January
Castle Grove, IA
- Average sunshine days in January: 15.8 days
The month with the most sunshine days is September (17 days).
The month with the least sunshine days is June (10.5 days).
Average UV index in January
Castle Grove, IA
- Average UV index in January: 1
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in January
Castle Grove, IA
- Average cloud cover in January: 60
The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in January
Castle Grove, IA
- Average visibility in January: 5mi
The months with the highest visibility are February, March, April, May, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January and July (5mi).
