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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 is a cold winter month in Riverside, Oregon, with an average temperature varying between 19.2°F (-7.1°C) and 32.7°F (0.4°C). January begins with an average high-temperature of a wintry 32.7°F (0.4°C), reflecting close similarity to the preceding month. Weather in January »
Weather in February
February, the last month of the winter in Riverside, is another cold month, with an average temperature ranging between max 36.1°F (2.3°C) and min 23.2°F (-4.9°C). The onset of February manifests an average high-temperature of a still wintry 36.1°F (2.3°C), demonstrating a minor variation from the preceding month. Weather in February »
Weather in March
The first month of the spring, March, is a chilly month in Riverside, Oregon, with temperature in the range of an average low of 29.7°F (-1.3°C) and an average high of 44.4°F (6.9°C). With the onset of March, Riverside's average high-temperature sees a modest rise, moving from February's icy 36.1°F (2.3°C) to a chilly 44.4°F (6.9°C). Weather in March »
Weather in April
April is a fresh spring month in Riverside, Oregon, with temperature in the range of an average high of 53.2°F (11.8°C) and an average low of 34°F (1.1°C). As April arrives, Riverside's weather shows a minor increase in high-temperatures, edging from March's frosty 44.4°F (6.9°C) to a fresh 53.2°F (11.8°C). Weather in April »
Weather in May
May, the last month of the spring in Riverside, is a comfortable month, with an average temperature fluctuating between 63.5°F (17.5°C) and 41.9°F (5.5°C). May sees a rise in the average high-temperature, climbing from a fresh 53.2°F (11.8°C) in April to a refreshing 63.5°F (17.5°C). Weather in May »
Weather in June
The first month of the summer, June, is an agreeable month in Riverside, Oregon, with an average temperature fluctuating between 72.7°F (22.6°C) and 49.3°F (9.6°C). The arrival of June brings a change in Riverside's weather, with average high-temperatures moving from May's comfortable 63.5°F (17.5°C) to a pleasant 72.7°F (22.6°C). Weather in June »
Weather in July
July is a warm summer month in Riverside, Oregon, with an average temperature varying between 85.3°F (29.6°C) and 58.8°F (14.9°C). July is the warmest month, with an average high-temperature of 85.3°F (29.6°C) and an average low-temperature of 58.8°F (14.9°C). Weather in July »
Weather in August
The last month of the summer, August, is also a moderately hot month in Riverside, Oregon, with temperature in the range of an average low of 59°F (15°C) and an average high of 83.5°F (28.6°C). Riverside signifies an average high-temperature of a still moderately hot 83.5°F (28.6°C) in August, closely mirroring the 85.3°F (29.6°C) of July. Weather in August »
Weather in September
The first month of the autumn, September, is still a pleasant month in Riverside, Oregon, with an average temperature fluctuating between 51.8°F (11°C) and 73°F (22.8°C). With September's onset, the weather shows a temperature decrease, transitioning from a moderately hot 83.5°F (28.6°C) in August to an agreeable 73°F (22.8°C). Weather in September »
Weather in October
October, like September, is another refreshing autumn month in Riverside, Oregon, with an average temperature ranging between min 39.7°F (4.3°C) and max 56.8°F (13.8°C). October signals a clear decrease in the average high-temperature, dropping from September's pleasant 73°F (22.8°C) to a moderate 56.8°F (13.8°C). Weather in October »
Weather in November
The last month of the autumn, November, is also a wintry month in Riverside, Oregon, with temperature in the range of an average high of 42.6°F (5.9°C) and an average low of 28.8°F (-1.8°C). Riverside in November experiences a subtle temperature decline, with average high-temperatures reducing from a mild 56.8°F (13.8°C) in October to a cold 42.6°F (5.9°C). Weather in November »
Weather in December
The first month of the winter, December, is still a freezing cold month in Riverside, Oregon, with temperature in the range of an average low of 19.4°F (-7°C) and an average high of 31.8°F (-0.1°C). December is the month when Riverside sees the lowest average temperatures, with a high of 31.8°F (-0.1°C) and a low of 19.4°F (-7°C). Weather in December »
[Resources]Frequently asked questions
What is the most humid month in Riverside?
January is the most humid month in Riverside, Oregon, with an average relative humidity of 85%.
How many days does it rain in Riverside?
Throughout the year, there are 109.9 rainfall days, and 11.34" (288mm) of precipitation is accumulated.
When does it snow in Riverside?
Months with snowfall in Riverside are January through May, November and December.
How many days does it snow in Riverside?
In Riverside, during the entire year, snow falls for 46.8 days and aggregates up to 25.75" (654mm) of snow.
What is the month with the lowest UV index in Riverside?
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Riverside.
When is Daylight Saving Time (DST) in Riverside?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from MST to MDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from MDT to MST.
When it does not snow in Riverside?
In Riverside, Oregon, snow does not fall in June through October.
When are the longest days in Riverside?
With an average of 15h and 24min of daylight, June has the longest days of the year.
What are the warmest months in Riverside?
July is the month when Riverside experiences its warmest temperatures, averaging a high of 85.3°F (29.6°C) and a low of 58.8°F (14.9°C).
What is the least humid month in Riverside?
The months with the lowest humidity in Riverside, Oregon, are July and August, with an average relative humidity of 31%.
What is the driest month in Riverside?
The month with the least rainfall is July, when the rain falls for 3.4 days and typically collects 0.12" (3mm) of precipitation.
What month has the most sunshine in Riverside?
July has the most sunshine of the year, with an average of 12h of sunshine.
When is the highest UV index in Riverside?
The month with the highest UV index is July, with an average maximum UV index of 7.
What month is the coldest in Riverside?
During the coldest month in Riverside, December, temperatures average a high of 31.8°F (-0.1°C) and a low of 19.4°F (-7°C).
What is the rainiest month in Riverside?
The month with the most rainfall is December, when the rain falls for 9.3 days and typically aggregates up to 1.77" (45mm) of precipitation.
When does it snow the most in Riverside?
The month with the most snowfall is December, when snow falls for 13.1 days and typically aggregates up to 9.13" (232mm) of snow.
What is the month with the shortest days in Riverside?
December has the shortest days of the year in Riverside, Oregon, with an average of 9h and 0min of daylight.
What is the month with the least sunshine in Riverside?
The month with the least sunshine in Riverside is December, with an average of 5.1h of sunshine.
Average temperature
Riverside, OR
The warmest month (with the highest average high temperature) is July (85.3°F).
The month with the lowest average high temperature is December (31.8°F).
The month with the highest average low temperature is August (59°F).
The coldest month (with the lowest average low temperature) is January (19.2°F).
Average pressure
Riverside, OR
- Average pressure in January:
30.23"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.04"Hg - Average pressure in April:
30.01"Hg - Average pressure in May:
29.95"Hg - Average pressure in June:
29.93"Hg
- Average pressure in July:
29.94"Hg - Average pressure in August:
29.93"Hg - Average pressure in September:
29.96"Hg - Average pressure in October:
30.05"Hg - Average pressure in November:
30.13"Hg - Average pressure in December:
30.2"Hg
The month with the highest atmospheric pressure is January (30.23"Hg).
The months with the lowest atmospheric pressure are June and August (29.93"Hg).
Average wind speed
Riverside, OR
- Average wind speed in January:
5mph - Average wind speed in February:
6.3mph - Average wind speed in March:
7.3mph - Average wind speed in April:
7.8mph - Average wind speed in May:
7.3mph - Average wind speed in June:
7.4mph
- Average wind speed in July:
7mph - Average wind speed in August:
6.6mph - Average wind speed in September:
6.4mph - Average wind speed in October:
6.3mph - Average wind speed in November:
5.8mph - Average wind speed in December:
5.4mph
The windiest month (with the highest average wind speed) is April (7.8mph).
The calmest month (with the lowest average wind speed) is January (5mph).
Average humidity
Riverside, OR
The month with the highest relative humidity is January (85%).
The months with the lowest relative humidity are July and August (31%).
Average rainfall
Riverside, OR
- Average rainfall in January:
1.46" - Average rainfall in February:
1.26" - Average rainfall in March:
1.46" - Average rainfall in April:
0.94" - Average rainfall in May:
1.26" - Average rainfall in June:
0.63"
- Average rainfall in July:
0.12" - Average rainfall in August:
0.2" - Average rainfall in September:
0.59" - Average rainfall in October:
0.71" - Average rainfall in November:
0.94" - Average rainfall in December:
1.77"
The wettest month (with the highest rainfall) is December (1.77").
The driest month (with the least rainfall) is July (0.12").
Average rainfall days
Riverside, OR
- Average rainfall days in January:
9.7 days - Average rainfall days in February:
9.6 days - Average rainfall days in March:
15.3 days - Average rainfall days in April:
13.7 days - Average rainfall days in May:
12.6 days - Average rainfall days in June:
8.1 days
- Average rainfall days in July:
3.4 days - Average rainfall days in August:
3.8 days - Average rainfall days in September:
5.5 days - Average rainfall days in October:
9.5 days - Average rainfall days in November:
9.4 days - Average rainfall days in December:
9.3 days
The month with the highest number of rainy days is March (15.3 days).
The month with the least rainy days is July (3.4 days).
Average snowfall
Riverside, OR
- Average snowfall in January:
6.1" - Average snowfall in February:
5.55" - Average snowfall in March:
1.81" - Average snowfall in April:
0.35" - Average snowfall in May:
0.04" - Average snowfall in June:
0"
The month with the highest snowfall is December (9.13").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days
Riverside, OR
- Average snowfall days in January:
11.1 days - Average snowfall days in February:
9.8 days - Average snowfall days in March:
5.8 days - Average snowfall days in April:
1.5 days - Average snowfall days in May:
0.2 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:
0.4 days - Average snowfall days in November:
4.9 days - Average snowfall days in December:
13.1 days
The month with the highest number of snowfall days is December (13.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Riverside, OR
- Average daylight in January:
9h and 2min - Average daylight in February:
10h and 3min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 3min - Average daylight in May:
14h and 4min - Average daylight in June:
15h and 2min
- Average daylight in July:
15h and 0min - Average daylight in August:
13h and 5min - Average daylight in September:
12h and 3min - Average daylight in October:
11h and 0min - Average daylight in November:
9h and 4min - Average daylight in December:
9h and 0min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in January:
5h and 1min - Average sunshine in February:
6h and 5min - Average sunshine in March:
7h and 5min - Average sunshine in April:
9h and 1min - Average sunshine in May:
11h and 0min - Average sunshine in June:
11h and 4min
- Average sunshine in July:
12h and 0min - Average sunshine in August:
11h and 0min - Average sunshine in September:
9h and 3min - Average sunshine in October:
8h and 2min - Average sunshine in November:
6h and 2min - Average sunshine in December:
5h and 1min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).
Average sunshine days
Riverside, OR
- Average sunshine days in January:
15.7 days - Average sunshine days in February:
12.6 days - Average sunshine days in March:
11.5 days - Average sunshine days in April:
14.4 days - Average sunshine days in May:
16.6 days - Average sunshine days in June:
18.9 days
- Average sunshine days in July:
25.3 days - Average sunshine days in August:
23.6 days - Average sunshine days in September:
22.1 days - Average sunshine days in October:
19.8 days - Average sunshine days in November:
16.8 days - Average sunshine days in December:
14.8 days
The month with the most sunshine days is July (25.3 days).
The month with the least sunshine days is March (11.5 days).
Average UV index
Riverside, OR
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover
Riverside, OR
The months with the most cloud cover are January and December (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 8).
Average visibility
Riverside, OR
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).
Riverside, Oregon, USA
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