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 stands out as Dewar's coldest month, with an average high-temperature of 24.3°F (-4.3°C) and a low-temperature of 12°F (-11.1°C).Humidity
With an average relative humidity of 87%, January is the most humid month.Rainfall
January and February are months with the least rain in Dewar, Iowa, when the rain falls for 4.1 days and typically aggregates up to 1.02" (26mm) of rain.Snowfall
Months with snowfall in Dewar are January through May, October through December. The month with the most snowfall in Dewar is January, when snow falls for 11.5 days and typically aggregates up to 4.21" (107mm) of snow.Daylight
The average length of the day in January in Dewar is 9h and 29min.On the first day of January in Dewar, sunrise is at 7:38 am and sunset at 4:46 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 5:20 pm CST.
Sunshine
With an average of 3.8h of sunshine, January has the least sunshine of the year.UV index
The average daily maximum UV index in January is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for the average person.Note: In January, the maximum UV index of 2 suggests these recommendations:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
Frequently asked questions
What is the coldest month in Dewar?
How cold is it in Dewar in January?
What is the most humid month in Dewar?
What is the average humidity in January in Dewar?
What is the driest month in Dewar?
How many days does it rain in January in Dewar?
When does it snow the most in Dewar?
How much does it snow in Dewar in January?
What is the average length of the day in January in Dewar?
What time are sunrise and sunset in January in Dewar?
What is the month with the least sunshine in Dewar?
How long on average sun shines in January in Dewar?
What is the UV index reading in January in Dewar?
Average temperature in January
Dewar, IA
- Average high temperature in January: 24.3°F
The warmest month (with the highest average high temperature) is July (80.1°F).
The month with the lowest average high temperature is January (24.3°F).
- Average low temperature in January: 12°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 (12°F).
Average pressure in January
Dewar, IA
- Average pressure in January: 30.14"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in January
Dewar, IA
- Average wind speed in January: 10.5mph
The windiest month (with the highest average wind speed) is April (10.8mph).
The calmest month (with the lowest average wind speed) is August (7mph).
Average humidity in January
Dewar, 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 (72%).
Average rainfall in January
Dewar, IA
- Average rainfall in January: 1.02"
The wettest month (with the highest rainfall) is June (4.29").
The driest months (with the least rainfall) are January and February (1.02").
Average rainfall days in January
Dewar, IA
- Average rainfall days in January: 4.1 days
The month with the highest number of rainy days is June (18.1 days).
The month with the least rainy days is February (4 days).
Average snowfall in January
Dewar, IA
- Average snowfall in January: 4.21"
The month with the highest snowfall is January (4.21").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Dewar, IA
- Average snowfall days in January: 11.5 days
The month with the highest number of snowfall days is January (11.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Dewar, IA
- Average daylight in January: 9h and 3min
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 6min).
- Average sunshine in January: 3h and 5min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in January
Dewar, IA
- Average sunshine days in January: 16.1 days
The month with the most sunshine days is October (17.8 days).
The month with the least sunshine days is June (10 days).
Average UV index in January
Dewar, IA
- Average UV index in January: 2
The month with the highest UV index is June (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in January
Dewar, 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 August (Cloud cover 31).
Average visibility in January
Dewar, 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).
Dewar, Iowa, USA
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