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
Williams's coldest month, January, generally records average temperatures ranging from a high of 24.3°F (-4.3°C) to a low of 11.8°F (-11.2°C).Humidity
With an average relative humidity of 87%, January is the most humid month.Rainfall
The month with the least rainfall is January, when the rain falls for 4.4 days and typically collects 0.98" (25mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. January is the month with the most snowfall. Snow falls for 11.7 days and accumulates 4.17" (106mm) of snow.Daylight
In January, the average length of the day in Williams is 9h and 29min.On the first day of the month, sunrise is at 7:43 am and sunset at 4:51 pm. On the last day of January, sunrise is at 7:29 am and sunset at 5:26 pm CST.
Sunshine
The month with the least sunshine in Williams, Iowa, is January, with an average of 3.7h of sunshine.UV index
The months with the lowest UV index 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 average individuals.Note: In January, a daily UV index of 2 turns into the following recommendations:
Long-term sun exposure is typically not a concern for most. However, those with sensitive skin, infants, and children must always have protection. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the coldest months?
How cold is it in Williams in January?
What is the most humid month?
What is the average humidity in January?
What is the driest month?
How much 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?
What time are sunrise and sunset in January?
What is the month with the least sunshine?
How many hours of sunshine does Williams have in January?
What are the months with the lowest UV index?
How high is the UV index in January?
Average temperature in January
Williams, IA
- Average high temperature in January: 24.3°F
The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (24.3°F).
- Average low temperature in January: 11.8°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (11.8°F).
Average pressure in January
Williams, 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
Williams, IA
- Average wind speed in January: 10.9mph
The windiest month (with the highest average wind speed) is April (11.1mph).
The calmest months (with the lowest average wind speed) are July and August (7.3mph).
Average humidity in January
Williams, IA
- Average humidity in January: 87%
The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is October (70%).
Average rainfall in January
Williams, IA
- Average rainfall in January: 0.98"
The wettest month (with the highest rainfall) is June (4.06").
The driest month (with the least rainfall) is January (0.98").
Average rainfall days in January
Williams, IA
- Average rainfall days in January: 4.4 days
The month with the highest number of rainy days is June (17.9 days).
The month with the least rainy days is February (3.4 days).
Average snowfall in January
Williams, IA
- Average snowfall in January: 4.17"
The month with the highest snowfall is January (4.17").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Williams, IA
- Average snowfall days in January: 11.7 days
The month with the highest number of snowfall days is January (11.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Williams, IA
- Average daylight in January: 9h and 3min
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 6min).
- Average sunshine in January: 3h and 4min
The months with the most sunshine are July and August (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in January
Williams, IA
- Average sunshine days in January: 16.6 days
The month with the most sunshine days is November (18.1 days).
The month with the least sunshine days is June (10.4 days).
Average UV index in January
Williams, IA
- Average UV index in January: 2
The month with the highest UV index is June (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
Williams, IA
- Average cloud cover in January: 60
The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is September (Cloud cover 32).
Average visibility in January
Williams, IA
- Average visibility in January: 5mi
The months with the highest visibility are February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, July and August (5mi).
Williams, Iowa, USA
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