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
Temperature records mark January as the coldest month, with highs averaging 45°F (7.2°C) and lows at 29.7°F (-1.3°C).Humidity
In Jamestown, the average relative humidity in January is 69%.Rainfall
In Jamestown, in January, it is raining for 6.2 days, with typically 1.02" (26mm) of accumulated precipitation. Throughout the year, there are 125.4 rainfall days, and 23.19" (589mm) of precipitation is accumulated.Snowfall
January through March, November and December are months with snowfall. In January, it is snowing for 2.8 days. Throughout January, 0.47" (12mm) of snow is accumulated. In Jamestown, during the entire year, snow falls for 8.5 days and aggregates up to 1.93" (49mm) of snow.Daylight
In January, the average length of the day is 10h and 0min.On the first day of the month, sunrise is at 7:34 am and sunset at 5:17 pm. On the last day of January, sunrise is at 7:24 am and sunset at 5:46 pm CST.
Sunshine
In January, the average sunshine in Jamestown is 5.7h.UV index
January and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: During January, 2 as the daily maximum UV index converts into the following advice:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What part of the year is the coldest?
What is the temperature in January?
What is the average humidity in January?
How much does it rain in January?
How much does it snow in January?
What is the average length of the day in January?
What time are sunrise and sunset in January?
How long on average sun shines in January?
When is the lowest UV index?
How high is the UV index in January in Jamestown?
Average temperature in January
Jamestown, OK
- Average high temperature in January: 45°F
The warmest month (with the highest average high temperature) is July (90.3°F).
The month with the lowest average high temperature is January (45°F).
- Average low temperature in January: 29.7°F
The month with the highest average low temperature is July (71.4°F).
The coldest month (with the lowest average low temperature) is January (29.7°F).
Average pressure in January
Jamestown, OK
- Average pressure in January: 30.17"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in January
Jamestown, OK
- Average wind speed in January: 9.9mph
The windiest month (with the highest average wind speed) is March (10.9mph).
The calmest months (with the lowest average wind speed) are July and August (7.1mph).
Average humidity in January
Jamestown, OK
- Average humidity in January: 69%
The month with the highest relative humidity is May (81%).
The month with the lowest relative humidity is October (68%).
Average rainfall in January
Jamestown, OK
- Average rainfall in January: 1.02"
The wettest month (with the highest rainfall) is May (4.06").
The driest month (with the least rainfall) is November (0.75").
Average rainfall days in January
Jamestown, OK
- Average rainfall days in January: 6.2 days
The month with the highest number of rainy days is May (14.8 days).
The month with the least rainy days is January (6.2 days).
Average snowfall in January
Jamestown, OK
- Average snowfall in January: 0.47"
The month with the highest snowfall is February (0.79").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in January
Jamestown, OK
- Average snowfall days in January: 2.8 days
The month with the highest number of snowfall days is January (2.8 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
Jamestown, OK
- Average daylight in January: 10h and 0min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in January: 5h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 36min).
Average sunshine days in January
Jamestown, OK
- Average sunshine days in January: 21.6 days
The month with the most sunshine days is November (21.9 days).
The month with the least sunshine days is May (12.9 days).
Average UV index in January
Jamestown, OK
- Average UV index in January: 2
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in January
Jamestown, OK
- Average cloud cover in January: 36
The month with the most cloud cover is March (Cloud cover 42).
The months with the least cloud cover are July and August (Cloud cover 23).
Average visibility in January
Jamestown, OK
- 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).
Jamestown, Oklahoma, USA
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