January weather forecastCostonia, OH

January

Weather in January

January, like December, in Costonia, Ohio, is another cold winter month, with an average temperature ranging between max 33.1°F (0.6°C) and min 20.3°F (-6.5°C).

Temperature

January, on average, is the coldest month, registering a high temperature of 33.1°F (0.6°C) and a low of 20.3°F (-6.5°C).

Humidity

In January, the average relative humidity is 84%.

Rainfall

In January, the rain falls for 10.2 days. Throughout January, 2.2" (56mm) of precipitation is accumulated. Throughout the year, in Costonia, there are 175.9 rainfall days, and 31.22" (793mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall in Costonia. January is the month with the most snowfall. Snow falls for 15.5 days and accumulates 5" (127mm) of snow.

Daylight

In Costonia, the average length of the day in January is 9h and 41min.
On the first day of January, sunrise is at 7:45 am and sunset at 5:06 pm. On the last day of the month, sunrise is at 7:32 am and sunset at 5:38 pm EST.

Sunshine

January has the least sunshine of the year, with an average of 2.9h of sunshine.

UV index

In January, the average daily maximum UV index is 2. A UV Index of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for the ordinary person.
Note: A daily high UV index of 2 in January leads to these guidelines:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Opt for tightly woven and loose clothing to enhance protection from the Sun. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.

Updated: Aug 23, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Temperature records mark January as the coldest month, with highs averaging 33.1°F (0.6°C) and lows at 20.3°F (-6.5°C).

Costonia in January has an average high-temperature of 33.1°F (0.6°C) and an average low-temperature of 20.3°F (-6.5°C).

The average relative humidity in January is 84%.

In Costonia, during January, the rain falls for 10.2 days and regularly aggregates up to 2.2" (56mm) of precipitation.

January is the month with the most snowfall. Snow falls for 15.5 days and accumulates 5" (127mm) of snow.

In January, it is snowing for 15.5 days. Throughout January, 5" (127mm) of snow is accumulated.

In January, the average day length is 9h and 41min.

In January, on the first day of the month, sunrise is at 7:45 am and sunset at 5:06 pm. On the last day of the month, sunrise is at 7:32 am and sunset at 5:38 pm EST.

January has the least sunshine of the year, with an average of 2.9h of sunshine.

In Costonia, the average sunshine duration in January is 2.9h.

The average daily maximum UV index in January in Costonia is 2. A UV Index of 2, and less, symbolizes a low health risk from unsafe exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year January F M A M J J A S O N D

Dec

January

Feb

Average high temperature

39.6°F

33.1°F

37°F

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

8mph

8.6mph

8.3mph

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

10.6

8.8

Average UV index

Average cloud cover

Average visibility

Average temperature in January
Costonia, OH

Average high temperature in January: 33.1°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 (33.1°F).

Average low temperature in January: 20.3°F

The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (20.3°F).

Average pressure in January
Costonia, OH

Average pressure in January: 30.11"Hg

The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in January
Costonia, OH

Average wind speed in January: 8.1mph

The windiest month (with the highest average wind speed) is January (8.1mph).
The calmest months (with the lowest average wind speed) are July and August (4.7mph).

Average humidity in January
Costonia, OH

Average humidity in January: 84%

The month with the highest relative humidity is February (85%).
The months with the lowest relative humidity are April, July and August (77%).

Average rainfall in January
Costonia, OH

Average rainfall in January: 2.2"

The wettest month (with the highest rainfall) is May (3.19").
The driest month (with the least rainfall) is November (2.17").

Average rainfall days in January
Costonia, OH

Average rainfall days in January: 10.2 days

The month with the highest number of rainy days is May (20.5 days).
The month with the least rainy days is February (9.4 days).

Average snowfall in January
Costonia, OH

Average snowfall in January: 5"

The month with the highest snowfall is January (5").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in January
Costonia, OH

Average snowfall days in January: 15.5 days

The month with the highest number of snowfall days is January (15.5 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in January /
Average sunshine in January
Costonia, OH

Average daylight in January: 9h and 42min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).

Average sunshine in January: 2h and 54min

The months with the most sunshine are July and August (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 2h and 54min).