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 Crystal Lake experiences its coldest temperatures, averaging a high of 22.1°F (-5.5°C) and a low of 9.9°F (-12.3°C).Humidity
January is the most humid month, with an average relative humidity of 89%.Rainfall
The month with the least rainfall in Crystal Lake, Iowa, is January, when the rain falls for 4.6 days and typically collects 0.98" (25mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In Crystal Lake, Iowa, in January, during 13.3 snowfall days, 4.8" (122mm) of snow is typically accumulated. In Crystal Lake, during the entire year, snow falls for 55.1 days and aggregates up to 22.05" (560mm) of snow.Daylight
In Crystal Lake, the average length of the day in January is 9h and 25min.On the first day of the month, sunrise is at 7:47 am and sunset at 4:50 pm. On the last day of January, sunrise is at 7:31 am and sunset at 5:25 pm CST.
Sunshine
The month with the least sunshine is January, with an average of 3.5h 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 of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: The maximum daily UV index of 1 in January interprets into the following recommendations:
Babies, children, and those with sensitive skin should always avoid extended periods in the sun. It's recommended to limit sun exposure when its radiation is at its peak during midday. Opt for tightly woven and loose clothing to enhance protection from the Sun. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What time of the year is the coldest?
How cold is it in January?
What is the most humid month?
What is the average humidity in January?
What is the driest month?
How many days does it rain in January?
How many days does it snow in January in Crystal Lake?
What is the average length of the day in January?
What time are sunrise and sunset in January?
What is the month with the least sunshine?
How long on average sun shines in January?
What is the month with the lowest UV index?
How high is the UV index in January?
Average temperature in January
Crystal Lake, IA
- Average high temperature in January: 22.1°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (22.1°F).
- Average low temperature in January: 9.9°F
The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is January (9.9°F).
Average pressure in January
Crystal Lake, IA
- Average pressure in January: 30.15"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in January
Crystal Lake, IA
- Average wind speed in January: 10.8mph
The windiest month (with the highest average wind speed) is April (10.9mph).
The calmest month (with the lowest average wind speed) is July (7.4mph).
Average humidity in January
Crystal Lake, IA
- Average humidity in January: 89%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is October (70%).
Average rainfall in January
Crystal Lake, IA
- Average rainfall in January: 0.98"
The wettest month (with the highest rainfall) is June (4.21").
The driest month (with the least rainfall) is January (0.98").
Average rainfall days in January
Crystal Lake, IA
- Average rainfall days in January: 4.6 days
The month with the highest number of rainy days is June (18.8 days).
The month with the least rainy days is February (3 days).
Average snowfall in January
Crystal Lake, IA
- Average snowfall in January: 4.8"
The month with the highest snowfall is February (5.79").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Crystal Lake, IA
- Average snowfall days in January: 13.3 days
The month with the highest number of snowfall days is January (13.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Crystal Lake, IA
- Average daylight in January: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in January: 3h and 3min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in January
Crystal Lake, IA
- Average sunshine days in January: 14.9 days
The months with the most sunshine days are October and November (17.4 days).
The month with the least sunshine days is June (9.2 days).
Average UV index in January
Crystal Lake, 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
Crystal Lake, IA
- Average cloud cover in January: 63
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in January
Crystal Lake, IA
- Average visibility in January: 5mi
The months with the highest visibility are March, April, May, June, September, October and November (6mi).
The months with the lowest visibility are January, February, July, August and December (5mi).
Crystal Lake, Iowa, USA
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