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
In Decatur, the lowest average temperatures are observed in January, with a high of 36.9°F (2.7°C) and a low of 24.1°F (-4.4°C).Humidity
The average relative humidity in January in Decatur, Ohio, is 80%.Rainfall
In Decatur, in January, it is raining for 11.6 days, with typically 2.13" (54mm) of accumulated precipitation. Throughout the year, there are 171.5 rainfall days, and 32.6" (828mm) of precipitation is accumulated.Snowfall
Months with snowfall in Decatur are January through April, October through December. In Decatur, in January, snow falls for 9.8 days, with typically accumulated 2.2" (56mm) of snow. Throughout the year, there are 33.5 snowfall days, and 9.41" (239mm) of snow is accumulated.Daylight
In Decatur, the average length of the day in January is 9h and 49min.On the first day of January in Decatur, sunrise is at 7:53 am and sunset at 5:23 pm. On the last day of the month, sunrise is at 7:41 am and sunset at 5:54 pm EST.
Sunshine
With an average of 4h of sunshine, January has the least sunshine of the year in Decatur.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Decatur. A UV Index estimate of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: In January, the UV index of 2 transforms into the following advice:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What time of the year is the coldest in Decatur?
How cold is January in Decatur?
What is the average humidity in January in Decatur?
How much does it rain in Decatur in January?
How much does it snow in Decatur in January?
How many hours of daylight does Decatur have in January?
What time are sunrise and sunset in January in Decatur?
What is the month with the least sunshine in Decatur?
How many hours of sunshine does Decatur have in January?
What are the months with the lowest UV index in Decatur?
What is the UV index reading in January in Decatur?
Average temperature in January
Decatur, OH
- Average high temperature in January: 36.9°F
The warmest month (with the highest average high temperature) is July (84.6°F).
The month with the lowest average high temperature is January (36.9°F).
- Average low temperature in January: 24.1°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 (24.1°F).
Average pressure in January
Decatur, OH
- Average pressure in January: 30.15"Hg
The months with the highest atmospheric pressure are January and November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in January
Decatur, OH
- Average wind speed in January: 8.8mph
The windiest month (with the highest average wind speed) is January (8.8mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).
Average humidity in January
Decatur, OH
- Average humidity in January: 80%
The months with the highest relative humidity are February and December (81%).
The months with the lowest relative humidity are August, September, October and November (76%).
Average rainfall in January
Decatur, OH
- Average rainfall in January: 2.13"
The wettest month (with the highest rainfall) is May (3.43").
The driest month (with the least rainfall) is September (1.81").
Average rainfall days in January
Decatur, OH
- Average rainfall days in January: 11.6 days
The month with the highest number of rainy days is May (18.7 days).
The month with the least rainy days is November (10.2 days).
Average snowfall in January
Decatur, OH
- Average snowfall in January: 2.2"
The month with the highest snowfall is February (2.4").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in January
Decatur, OH
- Average snowfall days in January: 9.8 days
The month with the highest number of snowfall days is January (9.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Decatur, OH
- Average daylight in January: 9h and 5min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in January: 4h and 0min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in January
Decatur, OH
- Average sunshine days in January: 11.4 days
The month with the most sunshine days is October (17.5 days).
The months with the least sunshine days are May and June (9.8 days).
Average UV index in January
Decatur, OH
- Average UV index in January: 2
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in January
Decatur, OH
- Average cloud cover in January: 59
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in January
Decatur, OH
- Average visibility in January: 5mi
The months with the highest visibility are March, April, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, May and July (5mi).
Decatur, Ohio, USA
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