January weather forecastIrwin, IA
January
Weather in January
January, like December, is another subzero cold winter month in Irwin, Iowa, with an average temperature fluctuating between 14.5°F (-9.7°C) and 27.3°F (-2.6°C).Temperature
January stands out as Irwin's coldest month, with temperatures ranging between an average high of 27.3°F (-2.6°C) and a low of 14.5°F (-9.7°C).Humidity
January is the most humid month, with an average relative humidity of 83%.Rainfall
January is the month with the least rainfall. Rain falls for 3.2 days and accumulates 0.43" (11mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Irwin, during January, snow falls for 8.3 days and regularly aggregates up to 1.57" (40mm) of snow. In Irwin, during the entire year, snow falls for 31.5 days and aggregates up to 7.13" (181mm) of snow.Daylight
The average length of the day in January is 9h and 34min.On the first day of the month, sunrise is at 7:48 am and sunset at 5:00 pm. On the last day of January, sunrise is at 7:34 am and sunset at 5:34 pm CST.
Sunshine
January has the least sunshine of the year, with an average of 4.5h of sunshine.UV index
The months with the lowest UV index in Irwin are January, February, October through December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for the average person.Note: The UV index of 2 in January translates into these instructions:
Most individuals face no significant issues with extended sun exposure, but it is always essential to protect children, babies, and those with sensitive skin. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Irwin, IA
- Average high temperature in January: 27.3°F
The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is January (27.3°F).
- Average low temperature in January: 14.5°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (14.5°F).
Average pressure in January
Irwin, 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 (29.87"Hg).
Average wind speed in January
Irwin, IA
- Average wind speed in January: 10.6mph
The windiest month (with the highest average wind speed) is April (10.9mph).
The calmest month (with the lowest average wind speed) is July (7.2mph).
Average humidity in January
Irwin, IA
- Average humidity in January: 83%
The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is October (68%).
Average rainfall in January
Irwin, IA
- Average rainfall in January: 0.43"
The wettest month (with the highest rainfall) is June (2.64").
The driest month (with the least rainfall) is January (0.43").
Average rainfall days in January
Irwin, IA
- Average rainfall days in January: 3.2 days
The month with the highest number of rainy days is June (16.1 days).
The month with the least rainy days is February (2.8 days).
Average snowfall in January
Irwin, IA
- Average snowfall in January: 1.57"
The month with the highest snowfall is February (2.09").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Irwin, IA
- Average snowfall days in January: 8.3 days
The month with the highest number of snowfall days is January (8.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Irwin, IA
- Average daylight in January: 9h and 36min
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: 4h and 30min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days in January
Irwin, IA
- Average sunshine days in January: 20.1 days
The month with the most sunshine days is December (21.6 days).
The month with the least sunshine days is June (11.4 days).
Average UV index in January
Irwin, IA
- Average UV index in January: 2
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, October, November and December (UV index 2).
Average cloud cover in January
Irwin, IA
- Average cloud cover in January: 52
The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 27).
Average visibility in January
Irwin, IA
- 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).
