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
The introduction of January sees an average high-temperature of a frosty 44.2°F (6.8°C), hardly deviating from December. Grand Rapids's average low-temperature is measured at a wintry 33.3°F (0.7°C) during January.Humidity
In Grand Rapids, the average relative humidity in January is 88%.Rainfall
The month with the most rainfall in Grand Rapids is January, when the rain falls for 19.3 days and typically aggregates up to 5.79" (147mm) of precipitation.Snowfall
January through April, November and December are months with snowfall. In Grand Rapids, during January, snow falls for 2.1 days and regularly aggregates up to 3.35" (85mm) of snow. Throughout the year, in Grand Rapids, there are 11.8 snowfall days, and 10.24" (260mm) of snow is accumulated.Daylight
The average length of the day in January in Grand Rapids, Oregon, is 9h and 9min.On the first day of the month, sunrise is at 7:55 am and sunset at 4:39 pm. On the last day of January, sunrise is at 7:37 am and sunset at 5:17 pm PST.
Sunshine
The average sunshine in January is 3.4h.UV index
The months with the lowest UV index in Grand Rapids are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for the ordinary person.Note: A daily maximum UV index of 2 in January translates into the following instructions:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
Frequently asked questions
How cold does it get in Grand Rapids in January?
What is the average humidity in January in Grand Rapids?
What is the rainiest month in Grand Rapids?
How much does it rain in Grand Rapids in January?
How many days does it snow in January in Grand Rapids?
What is the average length of the day in January in Grand Rapids?
When is the sunrise / sunset in January in Grand Rapids?
How long on average sun shines in January in Grand Rapids?
When is the lowest UV index in Grand Rapids?
What is the UV index intensity in January in Grand Rapids?
Average temperature in January
Grand Rapids, OR
- Average high temperature in January: 44.2°F
The warmest month (with the highest average high temperature) is August (77°F).
The month with the lowest average high temperature is December (42.1°F).
- Average low temperature in January: 33.3°F
The month with the highest average low temperature is August (50.7°F).
The coldest month (with the lowest average low temperature) is December (32.9°F).
Average pressure in January
Grand Rapids, OR
- Average pressure in January: 30.1"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The months with the lowest atmospheric pressure are August and September (30.02"Hg).
Average wind speed in January
Grand Rapids, OR
- Average wind speed in January: 4.8mph
The windiest months (with the highest average wind speed) are January, March and November (4.8mph).
The calmest month (with the lowest average wind speed) is September (3.9mph).
Average humidity in January
Grand Rapids, OR
- Average humidity in January: 88%
The month with the highest relative humidity is November (89%).
The month with the lowest relative humidity is July (73%).
Average rainfall in January
Grand Rapids, OR
- Average rainfall in January: 5.79"
The wettest month (with the highest rainfall) is January (5.79").
The driest months (with the least rainfall) are July and August (0.51").
Average rainfall days in January
Grand Rapids, OR
- Average rainfall days in January: 19.3 days
The month with the highest number of rainy days is March (21.7 days).
The month with the least rainy days is July (6 days).
Average snowfall in January
Grand Rapids, OR
- Average snowfall in January: 3.35"
The month with the highest snowfall is February (3.94").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in January
Grand Rapids, OR
- Average snowfall days in January: 2.1 days
The month with the highest number of snowfall days is February (4.4 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
Grand Rapids, OR
- Average daylight in January: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in January: 3h and 2min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 3h and 18min).
Average sunshine days in January
Grand Rapids, OR
- Average sunshine days in January: 10.1 days
The month with the most sunshine days is July (22.1 days).
The months with the least sunshine days are February and March (7.6 days).
Average UV index in January
Grand Rapids, OR
- Average UV index in January: 2
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in January
Grand Rapids, OR
- Average cloud cover in January: 65
The months with the most cloud cover are February and March (Cloud cover 67).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in January
Grand Rapids, OR
- Average visibility in January: 4mi
The months with the highest visibility are July and August (5mi).
The months with the lowest visibility are January, February, March, April, May, June, September, October, November and December (4mi).
Grand Rapids, Oregon, USA
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