January weather forecastCastalia, OH
January
Weather in January
January, the same as December, in Castalia, Ohio, is a freezing cold winter month, with an average temperature fluctuating between 30.7°F (-0.7°C) and 21.6°F (-5.8°C).Temperature
Castalia notes the coldest temperatures in January, with a high average of 30.7°F (-0.7°C) and a low of 21.6°F (-5.8°C).Humidity
In Castalia, Ohio, the average relative humidity in January is 83%.Rainfall
In Castalia, during January, the rain falls for 7.8 days and regularly aggregates up to 1.89" (48mm) of precipitation. In Castalia, Ohio, during the entire year, the rain falls for 160.4 days and collects up to 32.99" (838mm) of precipitation.Snowfall
Months with snowfall are January through April, November and December. In Castalia, in January, during 12.6 snowfall days, 2.87" (73mm) of snow is typically accumulated. In Castalia, during the entire year, snow falls for 41.3 days and aggregates up to 10.87" (276mm) of snow.Daylight
In January, the average length of the day in Castalia is 9h and 35min.On the first day of the month, sunrise is at 7:57 am and sunset at 5:12 pm. On the last day of January, sunrise is at 7:43 am and sunset at 5:45 pm EST.
Sunshine
The month with the least sunshine in Castalia, Ohio, is January, with an average of 3.2h of sunshine.UV index
The average daily maximum UV index in January is 2. A UV Index reading of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for the average person.Note: A maximum high UV index of 2 in January translates into the following recommendations:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. When the Sun is at its strongest around midday, find shade and limit exposure. Experience reduced UV exposure by about half when donning a wide-brim hat. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Castalia, OH
- Average high temperature in January: 30.7°F
The warmest month (with the highest average high temperature) is July (77.2°F).
The month with the lowest average high temperature is January (30.7°F).
- Average low temperature in January: 21.6°F
The month with the highest average low temperature is July (66.9°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure in January
Castalia, OH
- Average pressure in January: 30.1"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in January
Castalia, OH
- Average wind speed in January: 12.6mph
The windiest month (with the highest average wind speed) is January (12.6mph).
The calmest month (with the lowest average wind speed) is July (7.7mph).
Average humidity in January
Castalia, OH
- Average humidity in January: 83%
The month with the highest relative humidity is February (84%).
The months with the lowest relative humidity are October and November (75%).
Average rainfall in January
Castalia, OH
- Average rainfall in January: 1.89"
The wettest month (with the highest rainfall) is June (4.41").
The driest months (with the least rainfall) are February and December (1.61").
Average rainfall days in January
Castalia, OH
- Average rainfall days in January: 7.8 days
The month with the highest number of rainy days is May (17.8 days).
The months with the least rainy days are January and February (7.8 days).
Average snowfall in January
Castalia, OH
- Average snowfall in January: 2.87"
The month with the highest snowfall is February (3.5").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in January
Castalia, OH
- Average snowfall days in January: 12.6 days
The month with the highest number of snowfall days is January (12.6 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in January /
Average sunshine in January
Castalia, OH
- Average daylight in January: 9h and 36min
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: 3h and 12min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 12min).
Average sunshine days in January
Castalia, OH
- Average sunshine days in January: 10.5 days
The month with the most sunshine days is March (14.1 days).
The month with the least sunshine days is February (9.6 days).
Average UV index in January
Castalia, OH
- Average UV index in January: 2
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in January
Castalia, OH
- Average cloud cover in January: 67
The month with the most cloud cover is January (Cloud cover 67).
The months with the least cloud cover are July and August (Cloud cover 27).
Average visibility in January
Castalia, OH
- Average visibility in January: 5mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
