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Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Weather in January
January, like December, is a frosty winter month in Rivergrove, Oregon, with an average temperature varying between 46.2°F (7.9°C) and 34.9°F (1.6°C). Rivergrove's January reports an average high-temperature of a still frosty 46.2°F (7.9°C), exhibiting a minor difference from December. Weather in January »
Weather in February
February, the last month of the winter in Rivergrove, is another chilly month, with temperature in the range of an average low of 35.4°F (1.9°C) and an average high of 47.7°F (8.7°C). As Rivergrove welcomes February, the average high-temperature is noted at a still frosty 47.7°F (8.7°C), closely aligning with the preceding month. Weather in February »
Weather in March
The first month of the spring, March, is a cool month in Rivergrove, Oregon, with an average temperature fluctuating between 38.1°F (3.4°C) and 52.5°F (11.4°C). The dawn of March sees an average high-temperature of a cool 52.5°F (11.4°C), subtly contrasting with February's 47.7°F (8.7°C). Weather in March »
Weather in April
April in Rivergrove, Oregon, is a moderate spring month, with an average temperature ranging between max 58.5°F (14.7°C) and min 39.7°F (4.3°C). In April, the average high-temperature marginally rises from a cool 52.5°F (11.4°C) in March to a mild 58.5°F (14.7°C). Weather in April »
Weather in May
May, the last month of the spring in Rivergrove, is a refreshing month, with an average temperature ranging between max 67.1°F (19.5°C) and min 44.4°F (6.9°C). Rivergrove's transition into May is noticed by a slight rise in the average high-temperature, advancing from 58.5°F (14.7°C) in April to a still refreshing 67.1°F (19.5°C). Weather in May »
Weather in June
The first month of the summer, June, is a pleasant month in Rivergrove, Oregon, with an average temperature fluctuating between 72.7°F (22.6°C) and 48.6°F (9.2°C). June's onset witnesses a minor shift in the average high-temperature, moving from a refreshing 67.1°F (19.5°C) in May to a pleasant 72.7°F (22.6°C). Weather in June »
Weather in July
July in Rivergrove, Oregon, is a moderately hot summer month, with an average temperature varying between 53.2°F (11.8°C) and 80.6°F (27°C). As July arrives, a slight rise in the average high-temperature is observed, moving from an agreeable 72.7°F (22.6°C) in June to a moderately hot 80.6°F (27°C). Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Rivergrove, Oregon, with temperature in the range of an average low of 55°F (12.8°C) and an average high of 82°F (27.8°C). August, having an average high-temperature of 82°F (27.8°C) and an average low-temperature of 55°F (12.8°C), is the warmest month. August's average heat index is evaluated at 84.2°F (29°C). Weather in August »
Weather in September
The first month of the autumn, September, is still a warm month in Rivergrove, Oregon, with temperature in the range of an average low of 52°F (11.1°C) and an average high of 74.3°F (23.5°C). As Rivergrove enters September, the average high-temperature subtly lowers from the a moderately hot 82°F (27.8°C) of August to a still warm 74.3°F (23.5°C). Weather in September »
Weather in October
October, like September, in Rivergrove, Oregon, is another refreshing autumn month, with an average temperature fluctuating between 45.5°F (7.5°C) and 61.5°F (16.4°C). A moderate decline in the average high-temperature is seen during October, decreasing from a warm 74.3°F (23.5°C) in September to a comfortable 61.5°F (16.4°C). Weather in October »
Weather in November
The last month of the autumn, November, is also a fresh month in Rivergrove, Oregon, with an average temperature fluctuating between 50.9°F (10.5°C) and 39.9°F (4.4°C). Rivergrove in November demonstrates a small temperature transition, adjusting from an average high of a refreshing 61.5°F (16.4°C) in October to a cool 50.9°F (10.5°C). Weather in November »
Weather in December
The first month of the winter, December, is also a frosty month in Rivergrove, Oregon, with an average temperature fluctuating between 44.1°F (6.7°C) and 34.5°F (1.4°C). The lowest temperatures are recorded in December, with averages reaching a high of 44.1°F (6.7°C) and a low of 34.5°F (1.4°C). Weather in December »
Updated: Aug 22, 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
What is the most humid month?
January, February and December, with an average relative humidity of 84%, are most humid months.
How much does it rain?
Throughout the year, in Rivergrove, there are 170.9 rainfall days, and 30.67" (779mm) of precipitation is accumulated.
When does it snow?
January through March, November and December are months with snowfall.
How many days does it snow?
Throughout the year, there are 6.5 snowfall days, and 3.94" (100mm) of snow is accumulated.
What are the months with the lowest UV index?
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
What is the snowiest month?
February is the month with the most snowfall. Snow falls for 2.3 days and accumulates 1.57" (40mm) of snow.
What is the month with the least sunshine?
The month with the least sunshine is February, with an average of 4.1h of sunshine.
When is Daylight Saving Time (DST) in Rivergrove?
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.
When it does not snow?
April through October are months without snowfall.
When are the longest days?
With an average of 15h and 36min of daylight, June has the longest days of the year.
What is the driest month?
The month with the least rainfall is July, when the rain falls for 5 days and typically collects 0.31" (8mm) of precipitation.
What is the month with the highest UV index?
July is the month with the highest UV index, with an average maximum UV index of 6.
What time of the year is the hottest?
August, on average, is the warmest month, registering a high temperature of 82°F (27.8°C) and a low of 55°F (12.8°C).
What is the least humid month?
With an average relative humidity of 63%, August is the least humid month.
What month has the most sunshine?
With an average of 11h of sunshine, August has the most sunshine of the year in Rivergrove.
What part of the year is the coldest?
Rivergrove notes the coldest temperatures in December, with a average high of 44.1°F (6.7°C) and a low of 34.5°F (1.4°C).
What is the wettest month?
December is the month with the most rainfall. Rain falls for 18.9 days and accumulates 4.57" (116mm) of precipitation.
What is the month with the shortest days?
With an average of 8h and 48min of daylight, December has the shortest days of the year.
Average temperature
Rivergrove, OR
The warmest month (with the highest average high temperature) is August (82°F).
The month with the lowest average high temperature is December (44.1°F).
The month with the highest average low temperature is August (55°F).
The coldest month (with the lowest average low temperature) is December (34.5°F).
Average pressure
Rivergrove, OR
- Average pressure in January:
30.11"Hg - Average pressure in February:
30.08"Hg - Average pressure in March:
30.03"Hg - Average pressure in April:
30.06"Hg - Average pressure in May:
30.03"Hg - Average pressure in June:
30.03"Hg
- Average pressure in July:
30.04"Hg - Average pressure in August:
30.01"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:
30.1"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The months with the lowest atmospheric pressure are August and September (30.01"Hg).
Average wind speed
Rivergrove, OR
- Average wind speed in January:
5.5mph - Average wind speed in February:
5.3mph - Average wind speed in March:
5.2mph - Average wind speed in April:
4.8mph - Average wind speed in May:
4.2mph - Average wind speed in June:
4.2mph
- Average wind speed in July:
4.1mph - Average wind speed in August:
3.9mph - Average wind speed in September:
4mph - Average wind speed in October:
4.7mph - Average wind speed in November:
5.3mph - Average wind speed in December:
5.2mph
The windiest month (with the highest average wind speed) is January (5.5mph).
The calmest month (with the lowest average wind speed) is August (3.9mph).
Average humidity
Rivergrove, OR
The months with the highest relative humidity are January, February and December (84%).
The month with the lowest relative humidity is August (63%).
Average rainfall
Rivergrove, OR
- Average rainfall in January:
4.41" - Average rainfall in February:
3.31" - Average rainfall in March:
3.5" - Average rainfall in April:
2.95" - Average rainfall in May:
1.69" - Average rainfall in June:
1.38"
- Average rainfall in July:
0.31" - Average rainfall in August:
0.35" - Average rainfall in September:
1.57" - Average rainfall in October:
3.19" - Average rainfall in November:
3.43" - Average rainfall in December:
4.57"
The wettest month (with the highest rainfall) is December (4.57").
The driest month (with the least rainfall) is July (0.31").
Average rainfall days
Rivergrove, OR
- Average rainfall days in January:
18.4 days - Average rainfall days in February:
16.4 days - Average rainfall days in March:
19.8 days - Average rainfall days in April:
18.6 days - Average rainfall days in May:
13.4 days - Average rainfall days in June:
10.9 days
- Average rainfall days in July:
5 days - Average rainfall days in August:
4.8 days - Average rainfall days in September:
10.8 days - Average rainfall days in October:
14.8 days - Average rainfall days in November:
19.1 days - Average rainfall days in December:
18.9 days
The month with the highest number of rainy days is March (19.8 days).
The month with the least rainy days is August (4.8 days).
Average snowfall
Rivergrove, OR
The month with the highest snowfall is February (1.57").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days
Rivergrove, OR
- Average snowfall days in January:
1.3 days - Average snowfall days in February:
2.3 days - Average snowfall days in March:
1.6 days - Average snowfall days in April:
0 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:
0.4 days - Average snowfall days in December:
0.9 days
The month with the highest number of snowfall days is February (2.3 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Rivergrove, OR
- Average daylight in January:
9h and 1min - Average daylight in February:
10h and 2min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 4min - Average daylight in May:
14h and 5min - Average daylight in June:
15h and 4min
- Average daylight in July:
15h and 1min - Average daylight in August:
14h and 0min - Average daylight in September:
12h and 3min - Average daylight in October:
10h and 5min - Average daylight in November:
9h and 3min - Average daylight in December:
8h and 5min
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:
4h and 1min - Average sunshine in February:
4h and 1min - Average sunshine in March:
5h and 5min - Average sunshine in April:
7h and 4min - Average sunshine in May:
8h and 5min - Average sunshine in June:
9h and 3min
- Average sunshine in July:
10h and 5min - Average sunshine in August:
11h and 0min - Average sunshine in September:
9h and 2min - Average sunshine in October:
5h and 2min - Average sunshine in November:
4h and 4min - Average sunshine in December:
4h and 1min
The month with the most sunshine is August (Average sunshine: 11h and 0min).
The month with the least sunshine is February (Average sunshine: 4h and 6min).
Average sunshine days
Rivergrove, OR
- Average sunshine days in January:
11.3 days - Average sunshine days in February:
8.6 days - Average sunshine days in March:
9.7 days - Average sunshine days in April:
9.3 days - Average sunshine days in May:
15.7 days - Average sunshine days in June:
16.8 days
- Average sunshine days in July:
25 days - Average sunshine days in August:
24.2 days - Average sunshine days in September:
18 days - Average sunshine days in October:
15.1 days - Average sunshine days in November:
9.7 days - Average sunshine days in December:
10.4 days
The month with the most sunshine days is July (25 days).
The month with the least sunshine days is February (8.6 days).
Average UV index
Rivergrove, OR
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
Rivergrove, OR
The month with the most cloud cover is February (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 22).
Average visibility
Rivergrove, OR
The months with the highest visibility are July, August and September (6mi).
The months with the lowest visibility are January, February, March, April, May, June, October, November and December (5mi).
Rivergrove, Oregon, USA
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