Climate and monthly weather forecastGrand Rapids, OR
Climate and monthly weather forecast
Weather in January
January in Grand Rapids, Oregon, is a chilly winter month, with an average temperature varying between 44.2°F (6.8°C) and 33.3°F (0.7°C). The onset of January brings with it an average high-temperature of a frosty 44.2°F (6.8°C), showing a negligible variation from the month before. Weather in January »Weather in February
February, the last month of the winter in Grand Rapids, is also a frosty month, with an average temperature ranging between max 45.9°F (7.7°C) and min 33.3°F (0.7°C). The commencement of February brings an average high-temperature of a still frosty 45.9°F (7.7°C), marking an inconsequential divergence from January. Weather in February »Weather in March
March, the first month of the spring in Grand Rapids, is still a chilly month, with an average temperature fluctuating between 35.2°F (1.8°C) and 49.8°F (9.9°C). The start of March marks an average high-temperature of a still frosty 49.8°F (9.9°C), hardly distinguishable from the conditions in February. Weather in March »Weather in April
April is a fresh spring month in Grand Rapids, Oregon, with an average temperature varying between 36.9°F (2.7°C) and 55°F (12.8°C). As Grand Rapids transitions from March to April, the average high-temperatures adjust to a cool 55°F (12.8°C), nearly the same as the previous 49.8°F (9.9°C). Weather in April »Weather in May
The last month of the spring, May, is an enjoyable month in Grand Rapids, Oregon, with temperature in the range of an average high of 63.5°F (17.5°C) and an average low of 41°F (5°C). May comes with a subtle rise, with the average high-temperature adjusting from a fresh 55°F (12.8°C) in April to an enjoyable 63.5°F (17.5°C). Weather in May »Weather in June
The first month of the summer, June, is a pleasant month in Grand Rapids, Oregon, with an average temperature fluctuating between 44.8°F (7.1°C) and 68.2°F (20.1°C). June's advent presents an average high-temperature of a pleasant 68.2°F (20.1°C), indicating a slight variation from the conditions of the previous month. Weather in June »Weather in July
July in Grand Rapids, Oregon, is a warm summer month, with an average temperature fluctuating between 75.2°F (24°C) and 49.6°F (9.8°C). July showcases a minor temperature ascent, adjusting from June's agreeable 68.2°F (20.1°C) to a warm 75.2°F (24°C). Weather in July »Weather in August
August, the last month of the summer in Grand Rapids, is another warm month, with an average temperature ranging between min 50.7°F (10.4°C) and max 77°F (25°C). August, on average, is the warmest month, registering a high temperature of 77°F (25°C) and a low of 50.7°F (10.4°C). Weather in August »Weather in September
September, the first month of the autumn in Grand Rapids, is also an agreeable month, with an average temperature fluctuating between 70.3°F (21.3°C) and 47.7°F (8.7°C). September's onset brings a negligible change in high-temperatures, falling from a moderately hot 77°F (25°C) in August to a pleasant 70.3°F (21.3°C). Weather in September »Weather in October
October, the same as September, in Grand Rapids, Oregon, is another mild autumn month, with an average temperature varying between 42.6°F (5.9°C) and 58.8°F (14.9°C). Transition from September to October is accompanied by a temperature drop, with average high-temperatures decreasing from a pleasant 70.3°F (21.3°C) to a mild 58.8°F (14.9°C). Weather in October »Weather in November
The last month of the autumn, November, is another chilly month in Grand Rapids, Oregon, with an average temperature varying between 37.8°F (3.2°C) and 48.6°F (9.2°C). The average high-temperature decreases in November, shifting from a refreshing 58.8°F (14.9°C) in October to a frosty 48.6°F (9.2°C). Weather in November »Weather in December
The first month of the winter, December, is still a cold month in Grand Rapids, Oregon, with an average temperature ranging between max 42.1°F (5.6°C) and min 32.9°F (0.5°C). December, known for its average high temperature of 42.1°F (5.6°C) and an average low temperature of 32.9°F (0.5°C), is the coldest month. Weather in December »Updated: Jun 4, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
The month with the most rainfall is January, when the rain falls for 19.3 days and typically aggregates up to 5.79" (147mm) of precipitation.
Throughout the year, there are 184.4 rainfall days, and 36.61" (930mm) of precipitation is accumulated.
Months with snowfall are January through April, November and December.
In Grand Rapids, during the entire year, snow falls for 11.8 days and aggregates up to 10.24" (260mm) of snow.
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
The month with the most snowfall is February, when snow falls for 4.4 days and typically aggregates up to 3.94" (100mm) of snow.
The month with the least sunshine is February, with an average of 3.3h of sunshine.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from PST to PDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from PDT to PST.
May through October are months without snowfall.
The month with the longest days in Grand Rapids is June, with an average of 15h and 42min of daylight.
The least humid month is July, with an average relative humidity of 73%.
July and August are months with the least rain when the rain falls for 6 days and typically aggregates up to 0.51" (13mm) of rain.
July is the month with the highest UV index, with an average maximum UV index of 5.
Grand Rapids's temperatures peak on average in August, reaching 77°F (25°C) at their highest and 50.7°F (10.4°C) at their lowest.
August has the most sunshine of the year, with an average of 10.2h of sunshine.
The most humid month is November, with an average relative humidity of 89%.
Grand Rapids's December weather reaches an average high of 42.1°F (5.6°C) and an average low of 32.9°F (0.5°C), making it the coldest month.
December has the shortest days of the year, with an average of 8h and 42min of daylight.
Average temperature
Grand Rapids, OR
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).
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
Grand Rapids, OR
- Average pressure in January:
30.1"Hg - Average pressure in February:
30.07"Hg - Average pressure in March:
30.03"Hg - Average pressure in April:
30.07"Hg - Average pressure in May:
30.04"Hg - Average pressure in June:
30.05"Hg
- Average pressure in July:
30.06"Hg - Average pressure in August:
30.02"Hg - Average pressure in September:
30.02"Hg - Average pressure in October:
30.04"Hg - Average pressure in November:
30.05"Hg - Average pressure in December:
30.09"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
Grand Rapids, OR
- Average wind speed in January:
4.8mph - Average wind speed in February:
4.7mph - Average wind speed in March:
4.8mph - Average wind speed in April:
4.6mph - Average wind speed in May:
4.3mph - Average wind speed in June:
4.3mph
- Average wind speed in July:
4.5mph - Average wind speed in August:
4.1mph - Average wind speed in September:
3.9mph - Average wind speed in October:
4.2mph - Average wind speed in November:
4.8mph - Average wind speed in December:
4.7mph
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
Grand Rapids, OR
The month with the highest relative humidity is November (89%).
The month with the lowest relative humidity is July (73%).
Average rainfall
Grand Rapids, OR
- Average rainfall in January:
5.79" - Average rainfall in February:
3.86" - Average rainfall in March:
4.06" - Average rainfall in April:
3.03" - Average rainfall in May:
2.17" - Average rainfall in June:
1.54"
- Average rainfall in July:
0.51" - Average rainfall in August:
0.51" - Average rainfall in September:
1.81" - Average rainfall in October:
3.82" - Average rainfall in November:
4.06" - Average rainfall in December:
5.47"
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
Grand Rapids, OR
- Average rainfall days in January:
19.3 days - Average rainfall days in February:
16.9 days - Average rainfall days in March:
21.7 days - Average rainfall days in April:
19.6 days - Average rainfall days in May:
14.6 days - Average rainfall days in June:
12.8 days
- Average rainfall days in July:
6 days - Average rainfall days in August:
6.4 days - Average rainfall days in September:
12.2 days - Average rainfall days in October:
16.7 days - Average rainfall days in November:
18.9 days - Average rainfall days in December:
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
Grand Rapids, OR
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
Grand Rapids, OR
- Average snowfall days in January:
2.1 days - Average snowfall days in February:
4.4 days - Average snowfall days in March:
2.5 days - Average snowfall days in April:
0.3 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0 days - Average snowfall days in November:
0.6 days - Average snowfall days in December:
1.9 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 / Average sunshine
Grand Rapids, OR
- Average daylight in January:
9h and 6min - Average daylight in February:
10h and 24min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 36min - Average daylight in May:
15h and 0min - Average daylight in June:
15h and 42min
- Average daylight in July:
15h and 18min - Average daylight in August:
14h and 6min - Average daylight in September:
12h and 30min - Average daylight in October:
10h and 54min - Average daylight in November:
9h and 30min - Average daylight in December:
8h and 42min
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 24min - Average sunshine in February:
3h and 18min - Average sunshine in March:
4h and 42min - Average sunshine in April:
6h and 18min - Average sunshine in May:
7h and 36min - Average sunshine in June:
8h and 24min
- Average sunshine in July:
9h and 54min - Average sunshine in August:
10h and 12min - Average sunshine in September:
8h and 24min - Average sunshine in October:
4h and 48min - Average sunshine in November:
3h and 42min - Average sunshine in December:
3h and 24min
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
Grand Rapids, OR
- Average sunshine days in January:
10.1 days - Average sunshine days in February:
7.6 days - Average sunshine days in March:
7.6 days - Average sunshine days in April:
8.8 days - Average sunshine days in May:
15.2 days - Average sunshine days in June:
15.3 days
- Average sunshine days in July:
22.1 days - Average sunshine days in August:
21.3 days - Average sunshine days in September:
15.6 days - Average sunshine days in October:
13.4 days - Average sunshine days in November:
9.3 days - Average sunshine days in December:
9.5 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
Grand Rapids, OR
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
Grand Rapids, OR
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
Grand Rapids, OR
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).
