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, characterized by an average high temperature of 28.2°F (-2.1°C) and a low temperature of 15.1°F (-9.4°C), is generally the coldest month.Humidity
January and June, with an average relative humidity of 82%, are the most humid months.Rainfall
January is the month with the least rainfall. Rain falls for 4 days and accumulates 0.47" (12mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. The month with the most snowfall is January, when snow falls for 8.7 days and typically aggregates up to 2.24" (57mm) of snow.Daylight
In Norwalk, the average length of the day in January is 9h and 35min.On the first day of January, sunrise is at 7:40 am and sunset at 4:55 pm. On the last day of the month, sunrise is at 7:27 am and sunset at 5:28 pm CST.
Sunshine
The month with the least sunshine is January, with an average of 4.3h of sunshine.UV index
January is the month with the lowest UV index, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for average individuals.Note: In January, the maximum UV index of 1 suggests this advice:
Long-term sun exposure is typically not a concern for most. However, those with sensitive skin, infants, and children must always have protection. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What month is the coldest?
How cold is 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?
What is the snowiest month?
How much does it snow in January?
How many hours of daylight does Norwalk have in January?
When 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?
What is the UV index intensity in January?
Average temperature in January
Norwalk, IA
- Average high temperature in January: 28.2°F
The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is January (28.2°F).
- Average low temperature in January: 15.1°F
The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (15.1°F).
Average pressure in January
Norwalk, 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
Norwalk, IA
- Average wind speed in January: 10.3mph
The windiest months (with the highest average wind speed) are January, February, March and April (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).
Average humidity in January
Norwalk, IA
- Average humidity in January: 82%
The months with the highest relative humidity are January and June (82%).
The month with the lowest relative humidity is October (70%).
Average rainfall in January
Norwalk, IA
- Average rainfall in January: 0.47"
The wettest month (with the highest rainfall) is May (2.76").
The driest month (with the least rainfall) is January (0.47").
Average rainfall days in January
Norwalk, IA
- Average rainfall days in January: 4 days
The month with the highest number of rainy days is June (15.9 days).
The month with the least rainy days is February (3 days).
Average snowfall in January
Norwalk, IA
- Average snowfall in January: 2.24"
The month with the highest snowfall is January (2.24").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Norwalk, IA
- Average snowfall days in January: 8.7 days
The month with the highest number of snowfall days is January (8.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Norwalk, 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 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 18min).
Average sunshine days in January
Norwalk, IA
- Average sunshine days in January: 20.3 days
The month with the most sunshine days is December (22.3 days).
The month with the least sunshine days is June (12.2 days).
Average UV index in January
Norwalk, 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
Norwalk, IA
- Average cloud cover in January: 54
The month with the most cloud cover is January (Cloud cover 54).
The months with the least cloud cover are July and September (Cloud cover 29).
Average visibility in January
Norwalk, 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).
Norwalk, Iowa, USA
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