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, with its high-temperature average of 27.1°F (-2.7°C) and a low-temperature average of 14.7°F (-9.6°C), is the coldest month.Humidity
The months with the highest humidity are January and July, with an average relative humidity of 84%.Rainfall
The month with the least rainfall is January, when the rain falls for 5.2 days and typically collects 1.18" (30mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Guernsey, in January, during 10.6 snowfall days, 4.96" (126mm) of snow is typically accumulated. Throughout the year, there are 39 snowfall days, and 16.65" (423mm) of snow is accumulated.Daylight
The average length of the day in January is 9h and 34min.On the first day of the month, sunrise is at 7:36 am and sunset at 4:49 pm. On the last day of January, sunrise is at 7:22 am and sunset at 5:23 pm CST.
Sunshine
January has the least sunshine of the year, with an average of 4.1h of sunshine.UV index
With an average maximum UV index of 1, January is the month with the lowest UV index. A UV Index reading of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum UV index, 1 during January, leads to the following recommendations:
Extended sunlight exposure does not pose significant problems for most people, except for children, infants, and people with fair skin who always need shielding. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the coldest months?
How cold is January?
What are the most humid months?
What is the average humidity in January in Guernsey?
What is the driest month?
How much does it rain in Guernsey in January?
How much does it snow in January?
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?
When is the lowest UV index?
What is the UV index reading in January?
Average temperature in January
Guernsey, IA
- Average high temperature in January: 27.1°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (27.1°F).
- Average low temperature in January: 14.7°F
The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (14.7°F).
Average pressure in January
Guernsey, 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 (29.89"Hg).
Average wind speed in January
Guernsey, IA
- Average wind speed in January: 10.7mph
The windiest months (with the highest average wind speed) are January and April (10.7mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).
Average humidity in January
Guernsey, IA
- Average humidity in January: 84%
The months with the highest relative humidity are January and July (84%).
The month with the lowest relative humidity is October (72%).
Average rainfall in January
Guernsey, IA
- Average rainfall in January: 1.18"
The wettest month (with the highest rainfall) is May (4.57").
The driest month (with the least rainfall) is January (1.18").
Average rainfall days in January
Guernsey, IA
- Average rainfall days in January: 5.2 days
The month with the highest number of rainy days is June (18.9 days).
The month with the least rainy days is February (5 days).
Average snowfall in January
Guernsey, IA
- Average snowfall in January: 4.96"
The month with the highest snowfall is February (5.24").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Guernsey, IA
- Average snowfall days in January: 10.6 days
The month with the highest number of snowfall days is January (10.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Guernsey, IA
- Average daylight in January: 9h and 4min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in January: 4h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in January
Guernsey, IA
- Average sunshine days in January: 16.8 days
The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is June (8.3 days).
Average UV index in January
Guernsey, 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
Guernsey, 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 August (Cloud cover 29).
Average visibility in January
Guernsey, 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).
Guernsey, Iowa, USA
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