Climate and monthly weather forecastGrand Ronde, OR
Climate and monthly weather forecast
Weather in January
January, the same as December, in Grand Ronde, Oregon, is another chilly winter month, with an average temperature fluctuating between 34°F (1.1°C) and 45.1°F (7.3°C). The average high-temperature is a still frosty 45.1°F (7.3°C) in January, hardly different from the 43.5°F (6.4°C) recorded in December. Weather in January »Weather in February
The last month of the winter, February, is another chilly month in Grand Ronde, Oregon, with an average temperature varying between 46.8°F (8.2°C) and 34.2°F (1.2°C). February registers an average high-temperature of a still frosty 46.8°F (8.2°C), slightly varied from January's 45.1°F (7.3°C). Weather in February »Weather in March
March, the first month of the spring in Grand Ronde, is a fresh month, with an average temperature fluctuating between 35.8°F (2.1°C) and 50.5°F (10.3°C). As February transitions into March, the average high-temperature rests at a fresh 50.5°F (10.3°C), maintaining a close resemblance to the previous month. Weather in March »Weather in April
April in Grand Ronde, Oregon, is a moderate spring month, with an average temperature ranging between max 55.9°F (13.3°C) and min 38.1°F (3.4°C). The onset of April brings a minor temperature shift, with the average high-temperature moving from a cool 50.5°F (10.3°C) in March to a moderate 55.9°F (13.3°C). Weather in April »Weather in May
May, the last month of the spring in Grand Ronde, is a refreshing month, with temperature in the range of an average high of 64°F (17.8°C) and an average low of 42.1°F (5.6°C). As May arrives, a slight rise in the average high-temperature is observed, moving from 55.9°F (13.3°C) in April to a still refreshing 64°F (17.8°C). Weather in May »Weather in June
The first month of the summer, June, is a pleasant month in Grand Ronde, Oregon, with an average temperature ranging between max 69.3°F (20.7°C) and min 46.2°F (7.9°C). Grand Ronde's shift from May to June is accompanied by an average high-temperature of a pleasant 69.3°F (20.7°C), a slight deviation from 64°F (17.8°C). Weather in June »Weather in July
July is a warm summer month in Grand Ronde, Oregon, with temperature in the range of an average high of 76.6°F (24.8°C) and an average low of 50.5°F (10.3°C). Observing a minor shift, the average high-temperature during July adjusts from June's agreeable 69.3°F (20.7°C) to a warm 76.6°F (24.8°C). Weather in July »Weather in August
The last month of the summer, August, is another warm month in Grand Ronde, Oregon, with an average temperature ranging between max 78.4°F (25.8°C) and min 52.3°F (11.3°C). August is the warmest month, exhibiting average temperatures of 78.4°F (25.8°C) at the peak and 52.3°F (11.3°C) at the base. Weather in August »Weather in September
The first month of the autumn, September, is also an agreeable month in Grand Ronde, Oregon, with an average temperature varying between 48.7°F (9.3°C) and 71.1°F (21.7°C). The beginning of September brings a minor change in the average high-temperature, shifting from a warm 78.4°F (25.8°C) in August to an agreeable 71.1°F (21.7°C). Weather in September »Weather in October
October, like September, is a moderate autumn month in Grand Ronde, Oregon, with an average temperature fluctuating between 59.7°F (15.4°C) and 43.7°F (6.5°C). Grand Ronde observes a minor decrease in the average high-temperature with the arrival of October, falling from September's pleasant 71.1°F (21.7°C) to a mild 59.7°F (15.4°C). Weather in October »Weather in November
November, the last month of the autumn in Grand Ronde, is also a frosty month, with an average temperature ranging between max 49.5°F (9.7°C) and min 38.5°F (3.6°C). A shift in Grand Ronde's weather is observed as October turns into November, with the average high temperature reducing from a mild 59.7°F (15.4°C) to a frosty 49.5°F (9.7°C). Weather in November »Weather in December
December, the first month of the winter in Grand Ronde, is also a frosty month, with an average temperature fluctuating between 33.3°F (0.7°C) and 43.5°F (6.4°C). In Grand Ronde, Oregon, the lowest temperatures are generally noted in December, averaging a high of 43.5°F (6.4°C) and a low of 33.3°F (0.7°C). Weather in December »Updated: Aug 29, 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
Throughout the year, there are 156 rainfall days, and 15.94" (405mm) of precipitation is accumulated.
January through March, November and December are months with snowfall.
Throughout the year, there are 5.8 snowfall days, and 1.77" (45mm) of snow is accumulated.
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
The months with the highest humidity are February and December, with an average relative humidity of 89%.
The month with the most snowfall is February, when snow falls for 2.3 days and typically aggregates up to 0.94" (24mm) of snow.
With an average of 3.4h of sunshine, February has the least sunshine of the year.
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.
In Grand Ronde, snow does not fall in April through October.
With an average of 15h and 36min of daylight, June has the longest days of the year.
The months with the highest UV index are June and July, with an average maximum UV index of 5.
The month with the least rainfall is July, when the rain falls for 5.7 days and typically collects 0.24" (6mm) of precipitation.
With average high and low temperatures of 78.4°F (25.8°C) and 52.3°F (11.3°C) respectively, August is Grand Ronde's warmest month.
August is the least humid month, with an average relative humidity of 71%.
The month with the most sunshine is August, with an average of 10.5h of sunshine.
The coldest month is December, with an average high-temperature of 43.5°F (6.4°C) and an average low-temperature of 33.3°F (0.7°C).
The month with the most rainfall is December, when the rain falls for 17.1 days and typically aggregates up to 2.56" (65mm) of precipitation.
December has the shortest days of the year, with an average of 8h and 48min of daylight.
Average temperature
Grand Ronde, OR
The warmest month (with the highest average high temperature) is August (78.4°F).
The month with the lowest average high temperature is December (43.5°F).
The month with the highest average low temperature is August (52.3°F).
The coldest month (with the lowest average low temperature) is December (33.3°F).
Average pressure
Grand Ronde, 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:
30.05"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:
30.01"Hg - Average pressure in October:
30.05"Hg - Average pressure in November:
30.06"Hg - Average pressure in December:
30.09"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is September (30.01"Hg).
Average wind speed
Grand Ronde, OR
- Average wind speed in January:
4.7mph - Average wind speed in February:
4.8mph - Average wind speed in March:
5mph - Average wind speed in April:
4.8mph - Average wind speed in May:
4.3mph - Average wind speed in June:
4.2mph
- Average wind speed in July:
4.2mph - Average wind speed in August:
3.8mph - Average wind speed in September:
3.9mph - Average wind speed in October:
4.3mph - Average wind speed in November:
4.7mph - Average wind speed in December:
4.5mph
The windiest month (with the highest average wind speed) is March (5mph).
The calmest month (with the lowest average wind speed) is August (3.8mph).
Average humidity
Grand Ronde, OR
The months with the highest relative humidity are February and December (89%).
The month with the lowest relative humidity is August (71%).
Average rainfall
Grand Ronde, OR
- Average rainfall in January:
2.44" - Average rainfall in February:
1.73" - Average rainfall in March:
1.85" - Average rainfall in April:
1.46" - Average rainfall in May:
1.06" - Average rainfall in June:
0.67"
- Average rainfall in July:
0.24" - Average rainfall in August:
0.31" - Average rainfall in September:
0.67" - Average rainfall in October:
1.3" - Average rainfall in November:
1.65" - Average rainfall in December:
2.56"
The wettest month (with the highest rainfall) is December (2.56").
The driest month (with the least rainfall) is July (0.24").
Average rainfall days
Grand Ronde, OR
- Average rainfall days in January:
16.8 days - Average rainfall days in February:
15.8 days - Average rainfall days in March:
18.9 days - Average rainfall days in April:
16 days - Average rainfall days in May:
12.1 days - Average rainfall days in June:
9.7 days
- Average rainfall days in July:
5.7 days - Average rainfall days in August:
4.8 days - Average rainfall days in September:
9.5 days - Average rainfall days in October:
13.2 days - Average rainfall days in November:
16.4 days - Average rainfall days in December:
17.1 days
The month with the highest number of rainy days is March (18.9 days).
The month with the least rainy days is August (4.8 days).
Average snowfall
Grand Ronde, OR
The month with the highest snowfall is February (0.94").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days
Grand Ronde, OR
- Average snowfall days in January:
1.2 days - Average snowfall days in February:
2.3 days - Average snowfall days in March:
1.1 days - Average snowfall days in April:
0.1 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:
0.3 days - Average snowfall days in December:
0.8 days
The month with the highest number of snowfall days is February (2.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Grand Ronde, OR
- Average daylight in January:
9h and 12min - Average daylight in February:
10h and 24min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 30min - Average daylight in May:
14h and 54min - Average daylight in June:
15h and 36min
- Average daylight in July:
15h and 12min - Average daylight in August:
14h and 0min - Average daylight in September:
12h and 30min - Average daylight in October:
10h and 54min - Average daylight in November:
9h and 36min - Average daylight in December:
8h and 48min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in January:
3h and 36min - Average sunshine in February:
3h and 24min - Average sunshine in March:
4h and 42min - Average sunshine in April:
6h and 12min - Average sunshine in May:
7h and 42min - Average sunshine in June:
8h and 42min
- Average sunshine in July:
10h and 24min - Average sunshine in August:
10h and 30min - Average sunshine in September:
8h and 42min - Average sunshine in October:
4h and 54min - Average sunshine in November:
4h and 0min - Average sunshine in December:
3h and 36min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 3h and 24min).
Average sunshine days
Grand Ronde, OR
- Average sunshine days in January:
11.3 days - Average sunshine days in February:
9.3 days - Average sunshine days in March:
10.2 days - Average sunshine days in April:
11.2 days - Average sunshine days in May:
16.2 days - Average sunshine days in June:
17.3 days
- Average sunshine days in July:
23.7 days - Average sunshine days in August:
23.2 days - Average sunshine days in September:
18 days - Average sunshine days in October:
15.3 days - Average sunshine days in November:
11.8 days - Average sunshine days in December:
11.8 days
The month with the most sunshine days is July (23.7 days).
The month with the least sunshine days is February (9.3 days).
Average UV index
Grand Ronde, OR
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover
Grand Ronde, OR
The month with the most cloud cover is February (Cloud cover 67).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility
Grand Ronde, OR
The months with the highest visibility are June, July, August and September (5mi).
The months with the lowest visibility are January, February, March, April, May, October, November and December (4mi).
