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, known for its average high temperature of 29.3°F (-1.5°C) and an average low temperature of 16°F (-8.9°C), is the coldest month.Humidity
The months with the highest humidity are January and June, with an average relative humidity of 81%.Rainfall
In Mercer, during January, the rain falls for 3.8 days and regularly aggregates up to 0.55" (14mm) of precipitation. Throughout the year, there are 115.1 rainfall days, and 19.21" (488mm) of precipitation is accumulated.Snowfall
January through April, October through December are months with snowfall. The month with the most snowfall in Mercer is January, when snow falls for 8.4 days and typically aggregates up to 2.28" (58mm) of snow.Daylight
The average length of the day in January is 9h and 38min.On the first day of January, sunrise is at 7:43 am and sunset at 5:00 pm. On the last day of the month, sunrise is at 7:30 am and sunset at 5:33 pm CST.
Sunshine
The month with the least sunshine is January, with an average of 4.4h of sunshine.UV index
The month with the lowest UV index is January, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for average individuals.Note: A typical high UV index of 1 in January suggests the following recommendations:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. 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
What is the coldest month?
How cold is it in January?
What are the most humid months?
What is the average humidity in January?
How many days does it rain in January?
What is the snowiest month?
How much does it snow in January?
What is the average length of the day in January?
When is the sunrise / sunset in January?
What is the month with the least sunshine?
How many hours of sunshine does Mercer have in January?
When is the lowest UV index?
What is the UV index intensity in January in Mercer?
Average temperature in January
Mercer, IA
- Average high temperature in January: 29.3°F
The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (29.3°F).
- Average low temperature in January: 16°F
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (16°F).
Average pressure in January
Mercer, 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 (29.88"Hg).
Average wind speed in January
Mercer, IA
- Average wind speed in January: 10.4mph
The windiest months (with the highest average wind speed) are March and April (10.5mph).
The calmest month (with the lowest average wind speed) is July (7mph).
Average humidity in January
Mercer, IA
- Average humidity in January: 81%
The months with the highest relative humidity are January and June (81%).
The month with the lowest relative humidity is October (70%).
Average rainfall in January
Mercer, IA
- Average rainfall in January: 0.55"
The wettest month (with the highest rainfall) is June (3.74").
The driest month (with the least rainfall) is February (0.51").
Average rainfall days in January
Mercer, IA
- Average rainfall days in January: 3.8 days
The month with the highest number of rainy days is May (16.5 days).
The month with the least rainy days is February (3 days).
Average snowfall in January
Mercer, IA
- Average snowfall in January: 2.28"
The month with the highest snowfall is January (2.28").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in January
Mercer, IA
- Average snowfall days in January: 8.4 days
The month with the highest number of snowfall days is January (8.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Mercer, 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 18min).
- Average sunshine in January: 4h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days in January
Mercer, IA
- Average sunshine days in January: 20.3 days
The month with the most sunshine days is November (22.5 days).
The month with the least sunshine days is May (12 days).
Average UV index in January
Mercer, IA
- Average UV index in January: 1
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in January
Mercer, IA
- Average cloud cover in January: 52
The month with the most cloud cover is January (Cloud cover 52).
The months with the least cloud cover are July and September (Cloud cover 29).
Average visibility in January
Mercer, 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).
Mercer, Iowa, USA
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