January weather forecastDuncan, OK
January
Weather in January
January in Duncan, Oklahoma tends to be the coolest month of the year. The chill even extends to daylight, with January having the shortest daylight duration out of the entire year. The familiar sights of snowflakes can be observed on about 1.3 days, with the clouds covering 26% of the sky. Despite these conditions, the average maximum temperature registers at 51.3°F (10.7°C), with a minimum average dropping to a frigid 33.6°F (0.9°C). Cold winds sweep across the city at an average speed of 10.2mph (16.4km/h), adding a brisk nip to the air.Temperature
The months of January and December bring the lowest temperatures in Duncan, averaging a high of 51.3°F (10.7°C).Humidity
The average relative humidity in January is 61%.Rainfall
In Duncan, during January, the rain falls for 5 days and regularly aggregates up to 1.18" (30mm) of precipitation. In Duncan, during the entire year, the rain falls for 113.4 days and collects up to 24.61" (625mm) of precipitation.Snowfall
January through April, November and December are months with snowfall. In Duncan, in January, during 1.3 snowfall days, 0.79" (20mm) of snow is typically accumulated. In Duncan, during the entire year, snow falls for 5.1 days and aggregates up to 3.03" (77mm) of snow.Daylight
In January, the average length of the day in Duncan is 10h and 10min.On the first day of the month, sunrise is at 7:38 am and sunset at 5:32 pm. On the last day of January, sunrise is at 7:30 am and sunset at 6:00 pm CST.
Sunshine
In Duncan, the average sunshine in January is 6.3h.UV index
In January, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: In January, the maximum UV index of 3 transforms into these recommendations:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Duncan, OK
- Average high temperature in January: 51.3°F
The warmest month (with the highest average high temperature) is August (95°F).
The months with the lowest average high temperature are January and December (51.3°F).
- Average low temperature in January: 33.6°F
The month with the highest average low temperature is July (73.9°F).
The coldest month (with the lowest average low temperature) is January (33.6°F).
Average pressure in January
Duncan, OK
- Average pressure in January: 30.16"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in January
Duncan, OK
- Average wind speed in January: 10.2mph
The windiest month (with the highest average wind speed) is April (11.6mph).
The calmest months (with the lowest average wind speed) are July, August and September (8.3mph).
Average humidity in January
Duncan, OK
- Average humidity in January: 61%
The month with the highest relative humidity is May (73%).
The month with the lowest relative humidity is August (55%).
Average rainfall in January
Duncan, OK
- Average rainfall in January: 1.18"
The wettest month (with the highest rainfall) is May (4.37").
The driest month (with the least rainfall) is February (1.02").
Average rainfall days in January
Duncan, OK
- Average rainfall days in January: 5 days
The month with the highest number of rainy days is May (13.5 days).
The month with the least rainy days is January (5 days).
Average snowfall in January
Duncan, OK
- Average snowfall in January: 0.79"
The month with the highest snowfall is February (1.3").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in January
Duncan, OK
- Average snowfall days in January: 1.3 days
The month with the highest number of snowfall days is February (1.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in January /
Average sunshine in January
Duncan, OK
- Average daylight in January: 10h and 12min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in January: 6h and 18min
The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 0min).
Average sunshine days in January
Duncan, OK
- Average sunshine days in January: 24.3 days
The month with the most sunshine days is January (24.3 days).
The month with the least sunshine days is May (15.7 days).
Average UV index in January
Duncan, OK
- Average UV index in January: 3
The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in January
Duncan, OK
- Average cloud cover in January: 26
The month with the most cloud cover is March (Cloud cover 36).
The month with the least cloud cover is August (Cloud cover 20).
Average visibility in January
Duncan, 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).
