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 brings the lowest temperatures, with an average high of 69.8°F (21°C) and an average low of 53.2°F (11.8°C).Humidity
The average relative humidity in January is 62%.Rainfall
In Sullivan City, Texas, during January, the rain falls for 6.8 days and regularly aggregates up to 0.51" (13mm) of precipitation. Throughout the year, there are 98.5 rainfall days, and 12.17" (309mm) of precipitation is accumulated.Snowfall
The only month with snowfall is January. The month with the most snowfall is January, when snow falls for 0.1 days and typically aggregates up to 0.04" (1mm) of snow.Daylight
In January, the average length of the day is 10h and 43min.On the first day of the month, sunrise is at 7:21 am and sunset at 5:53 pm. On the last day of January, sunrise is at 7:19 am and sunset at 6:16 pm CST.
Sunshine
In January, the average sunshine is 7.2h.UV index
In January, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: In January, the maximum UV index of 5 suggests this advice:
Act with care - Obligation to protect against skin and eye damage is highlighted. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest month?
What is the usual temperature for Sullivan City in January?
What is the average humidity in January?
How many days does it rain in January?
What is the snowiest month?
When does it start to snow?
What is the average length of the day in January?
When are sunrise and sunset in January?
How many hours of sunshine does Sullivan City have in January?
What is the UV index reading in January?
Average temperature in January
Sullivan City, TX
- Average high temperature in January: 69.8°F
The warmest month (with the highest average high temperature) is August (99.9°F).
The month with the lowest average high temperature is January (69.8°F).
- Average low temperature in January: 53.2°F
The month with the highest average low temperature is August (80.1°F).
The coldest month (with the lowest average low temperature) is January (53.2°F).
Average pressure in January
Sullivan City, TX
- Average pressure in January: 30.12"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The months with the lowest atmospheric pressure are May and June (29.87"Hg).
Average wind speed in January
Sullivan City, TX
- Average wind speed in January: 9.4mph
The windiest month (with the highest average wind speed) is July (13.7mph).
The calmest months (with the lowest average wind speed) are January and December (9.4mph).
Average humidity in January
Sullivan City, TX
- Average humidity in January: 62%
The month with the highest relative humidity is December (66%).
The month with the lowest relative humidity is August (55%).
Average rainfall in January
Sullivan City, TX
- Average rainfall in January: 0.51"
The wettest month (with the highest rainfall) is September (2.2").
The driest month (with the least rainfall) is February (0.47").
Average rainfall days in January
Sullivan City, TX
- Average rainfall days in January: 6.8 days
The month with the highest number of rainy days is September (15.3 days).
The month with the least rainy days is February (5.6 days).
Average snowfall in January
Sullivan City, TX
- Average snowfall in January: 0.04"
The month with the highest snowfall is January (0.04").
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in January
Sullivan City, TX
- Average snowfall days in January: 0.1 days
The month with the highest number of snowfall days is January (0.1 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in January /
Average sunshine in January
Sullivan City, TX
- Average daylight in January: 10h and 4min
The month with the longest days is June (Average daylight: 13h and 48min).
The month with the shortest days is December (Average daylight: 10h and 30min).
- Average sunshine in January: 7h and 1min
The month with the most sunshine is July (Average sunshine: 11h and 24min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).
Average sunshine days in January
Sullivan City, TX
- Average sunshine days in January: 22.2 days
The month with the most sunshine days is August (23.3 days).
The month with the least sunshine days is September (12.9 days).
Average UV index in January
Sullivan City, TX
- Average UV index in January: 5
The months with the highest UV index are July and August (UV index 8).
The month with the lowest UV index is December (UV index 4).
Average cloud cover in January
Sullivan City, TX
- Average cloud cover in January: 33
The month with the most cloud cover is December (Cloud cover 36).
The month with the least cloud cover is August (Cloud cover 16).
Average visibility in January
Sullivan City, TX
- Average visibility in January: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Sullivan City, Texas, USA
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