January weather forecastGrants Pass, OR
January
Weather in January
During January in Grants Pass, Oregon, USA, a distinct shift from the cold and wet winter weather of the previous month is absent. The city experiences a chilly atmosphere with high humidity. Despite a relatively high average of 15.3 rainfall days, the total accumulation is approximately 3.98" (101mm). The presence of lower pressure in the atmosphere leads to overcast skies for the most part of the day, limiting sunlight hours. As the year begins, wind speeds remain gentle, offering a respite from the icy temperatures.Temperature
January's onset sees an average high-temperature of a still chilly 47.8°F (8.8°C), exhibiting a slight fluctuation from the previous month. In January, Grants Pass experiences an average nighttime temperature of 32.5°F (0.3°C).Humidity
The most humid month is January, with an average relative humidity of 85%.Rainfall
In January, the rain falls for 15.3 days. Throughout January, 3.98" (101mm) of precipitation is accumulated. In Grants Pass, during the entire year, the rain falls for 135.3 days and collects up to 23.54" (598mm) of precipitation.Snowfall
Months with snowfall are January through April, November and December. In Grants Pass, during January, snow falls for 1.3 days and regularly aggregates up to 1.34" (34mm) of snow. Throughout the year, there are 7.9 snowfall days, and 5.12" (130mm) of snow is accumulated.Daylight
The average length of the day in January is 9h and 30min.On the first day of January in Grants Pass, sunrise is at 7:42 am and sunset at 4:50 pm. On the last day of the month, sunrise is at 7:28 am and sunset at 5:25 pm PST.
Sunshine
In Grants Pass, the average sunshine in January is 4.9h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum UV index of 2 during January translates into these guidelines:
Extended sunlight exposure does not pose significant problems for most people, except for children, infants, and people with fair skin who always need shielding. The solar radiation around mid-day is intense; avoid the Sun and stay safe. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Grants Pass, OR
- Average high temperature in January: 47.8°F
The warmest month (with the highest average high temperature) is August (84.7°F).
The month with the lowest average high temperature is December (46°F).
- Average low temperature in January: 32.5°F
The month with the highest average low temperature is August (49.1°F).
The coldest month (with the lowest average low temperature) is December (31.5°F).
Average pressure in January
Grants Pass, OR
- Average pressure in January: 30.13"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is August (29.99"Hg).
Average wind speed in January
Grants Pass, OR
- Average wind speed in January: 3.9mph
The windiest month (with the highest average wind speed) is March (4mph).
The calmest month (with the lowest average wind speed) is August (3.2mph).
Average humidity in January
Grants Pass, OR
- Average humidity in January: 85%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is August (63%).
Average rainfall in January
Grants Pass, OR
- Average rainfall in January: 3.98"
The wettest month (with the highest rainfall) is December (4.02").
The driest month (with the least rainfall) is July (0.12").
Average rainfall days in January
Grants Pass, OR
- Average rainfall days in January: 15.3 days
The month with the highest number of rainy days is March (18.7 days).
The month with the least rainy days is August (2.5 days).
Average snowfall in January
Grants Pass, OR
- Average snowfall in January: 1.34"
The month with the highest snowfall is February (1.5").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in January
Grants Pass, OR
- Average snowfall days in January: 1.3 days
The month with the highest number of snowfall days is February (2.8 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
Grants Pass, OR
- Average daylight in January: 9h and 30min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in January: 4h and 54min
The months with the most sunshine are July and August (Average sunshine: 11h and 48min).
The month with the least sunshine is December (Average sunshine: 4h and 42min).
Average sunshine days in January
Grants Pass, OR
- Average sunshine days in January: 14.7 days
The month with the most sunshine days is July (26.7 days).
The month with the least sunshine days is March (10.8 days).
Average UV index in January
Grants Pass, OR
- Average UV index in January: 2
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in January
Grants Pass, OR
- Average cloud cover in January: 49
The month with the most cloud cover is March (Cloud cover 54).
The month with the least cloud cover is August (Cloud cover 16).
Average visibility in January
Grants Pass, OR
- Average visibility in January: 4mi
The month with the highest visibility is August (6mi).
The months with the lowest visibility are January, February, March, April and December (4mi).
