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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 freezing cold winter month in Richland, Oregon, with an average temperature fluctuating between 31.8°F (-0.1°C) and 19.4°F (-7°C). Richland registers an average high-temperature of a still freezing cold 31.8°F (-0.1°C) with the arrival of January, showing minor deviation from the preceding month. Weather in January »
Weather in February
February, the last month of the winter in Richland, is a wintry month, with an average temperature varying between 22.6°F (-5.2°C) and 34.3°F (1.3°C). The advent of February presents an average high-temperature of a cold 34.3°F (1.3°C), maintaining a close correlation with the preceding month. Weather in February »
Weather in March
March, the first month of the spring in Richland, is still a cold month, with an average temperature ranging between min 27.3°F (-2.6°C) and max 41.9°F (5.5°C). March's arrival signals a modest temperature shift, moving from a cold 34.3°F (1.3°C) in February to a still icy 41.9°F (5.5°C). Weather in March »
Weather in April
April is a fresh spring month in Richland, Oregon, with an average temperature fluctuating between 50.5°F (10.3°C) and 31.1°F (-0.5°C). Richland's April weather indicates a minor ascent in high-temperatures, adjusting from an icy 41.9°F (5.5°C) in March to a fresh 50.5°F (10.3°C). Weather in April »
Weather in May
The last month of the spring, May, is a refreshing month in Richland, Oregon, with temperature in the range of an average high of 60.8°F (16°C) and an average low of 38.3°F (3.5°C). Observing a rise in May, the average high-temperature goes from April's fresh 50.5°F (10.3°C) to a refreshing 60.8°F (16°C). Weather in May »
Weather in June
June, the first month of the summer in Richland, is a pleasant month, with an average temperature varying between 69.4°F (20.8°C) and 44.4°F (6.9°C). The shift into June is accompanied by a modest temperature increase, with the average high-temperature edging up from a comfortable 60.8°F (16°C) in May to a pleasant 69.4°F (20.8°C). Weather in June »
Weather in July
July is a warm summer month in Richland, Oregon, with an average temperature ranging between max 81.7°F (27.6°C) and min 52.3°F (11.3°C). With average high and low temperatures of 81.7°F (27.6°C) and 52.3°F (11.3°C) respectively, July is Richland's warmest month. July's heat index is computed to be 80.6°F (27°C). Weather in July »
Weather in August
August, the last month of the summer in Richland, is also a moderately hot month, with an average temperature ranging between min 53.8°F (12.1°C) and max 81.3°F (27.4°C). As Richland welcomes August, the average high-temperature records at a still moderately hot 81.3°F (27.4°C), marking an insignificant deviation from the prior month. Weather in August »
Weather in September
The first month of the autumn, September, is also an agreeable month in Richland, Oregon, with an average temperature varying between 47.3°F (8.5°C) and 71.2°F (21.8°C). The onset of September is marked by a decrease in temperature, transitioning from a moderately hot 81.3°F (27.4°C) in August to an agreeable 71.2°F (21.8°C). Weather in September »
Weather in October
October, the same as September, is another fresh autumn month in Richland, Oregon, with an average temperature varying between 36.5°F (2.5°C) and 55.2°F (12.9°C). As Richland steps into October, a marked temperature drop is observed, with the average high-temperature reducing from September's agreeable 71.2°F (21.8°C) to a cool 55.2°F (12.9°C). Weather in October »
Weather in November
November, the last month of the autumn in Richland, is another cold month, with an average temperature varying between 40.5°F (4.7°C) and 27°F (-2.8°C). The transition from October to November brings a clear temperature drop, with average high-temperatures decreasing from a fresh 55.2°F (12.9°C) to a cold 40.5°F (4.7°C). Weather in November »
Weather in December
December, the first month of the winter in Richland, is also a subzero cold month, with an average temperature ranging between max 30.7°F (-0.7°C) and min 18.5°F (-7.5°C). With an average high-temperature of 30.7°F (-0.7°C) and an average low-temperature of 18.5°F (-7.5°C), December is the coldest month. Weather in December »
Updated: Aug 12, 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 is the most humid month, with an average relative humidity of 88%.
How much does it rain?
Throughout the year, there are 113.5 rainfall days, and 12.56" (319mm) of precipitation is accumulated.
When does it snow?
Months with snowfall are January through May, October through December.
How many days does it snow?
In Richland, during the entire year, snow falls for 65.1 days and aggregates up to 38.9" (988mm) of snow.
What is the month with the least sunshine in Richland?
The month with the least sunshine in Richland is January, with an average of 4.8h of sunshine.
When is the lowest UV index?
With an average maximum UV index of 1, January is the month with the lowest UV index.
When is Daylight Saving Time (DST)?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Richland, 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?
In Richland, snow does not fall in June through September.
When are the longest days?
June has the longest days of the year, with an average of 15h and 30min of daylight.
What is the warmest month?
July, recording an average high temperature of 81.7°F (27.6°C) and a low temperature of 52.3°F (11.3°C), is Richland's warmest month.
When is the highest UV index?
The month with the highest UV index in Richland is July, with an average maximum UV index of 6.
What is the least humid month in Richland?
The least humid month is August, with an average relative humidity of 40%.
What is the driest month?
August is the month with the least rainfall. Rain falls for 4.4 days and accumulates 0.31" (8mm) of precipitation.
What month has the most sunshine?
The month with the most sunshine is August, with an average of 12.1h of sunshine.
What month is the coldest?
In Richland, December records the average lowest temperatures, peaking at 30.7°F (-0.7°C) and reaching a low of 18.5°F (-7.5°C).
What is the wettest month?
December is the month with the most rainfall. Rain falls for 8.6 days and accumulates 1.77" (45mm) of precipitation.
When does it snow the most?
The month with the most snowfall in Richland is December, when snow falls for 14.7 days and typically aggregates up to 10.59" (269mm) of snow.
What is the month with the shortest days?
December has the shortest days of the year, with an average of 8h and 54min of daylight.
Average temperature
Richland, OR
The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is December (30.7°F).
The month with the highest average low temperature is August (53.8°F).
The coldest month (with the lowest average low temperature) is December (18.5°F).
Average pressure
Richland, OR
- Average pressure in January:
30.22"Hg - Average pressure in February:
30.11"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:
29.92"Hg - Average pressure in September:
29.96"Hg - Average pressure in October:
30.05"Hg - Average pressure in November:
30.12"Hg - Average pressure in December:
30.19"Hg
The month with the highest atmospheric pressure is January (30.22"Hg).
The month with the lowest atmospheric pressure is August (29.92"Hg).
Average wind speed
Richland, OR
- Average wind speed in January:
5.5mph - Average wind speed in February:
5.5mph - Average wind speed in March:
5.8mph - Average wind speed in April:
6.2mph - Average wind speed in May:
5.7mph - Average wind speed in June:
5.8mph
- Average wind speed in July:
5.7mph - Average wind speed in August:
5.5mph - Average wind speed in September:
5.4mph - Average wind speed in October:
5.4mph - Average wind speed in November:
5.7mph - Average wind speed in December:
5.8mph
The windiest month (with the highest average wind speed) is April (6.2mph).
The calmest months (with the lowest average wind speed) are September and October (5.4mph).
Average humidity
Richland, OR
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is August (40%).
Average rainfall
Richland, OR
- Average rainfall in January:
1.61" - Average rainfall in February:
1.54" - Average rainfall in March:
1.57" - Average rainfall in April:
1.02" - Average rainfall in May:
1.22" - Average rainfall in June:
0.79"
- Average rainfall in July:
0.35" - Average rainfall in August:
0.31" - Average rainfall in September:
0.43" - Average rainfall in October:
0.91" - Average rainfall in November:
1.02" - 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 August (0.31").
Average rainfall days
Richland, OR
- Average rainfall days in January:
7.9 days - Average rainfall days in February:
9 days - Average rainfall days in March:
15.6 days - Average rainfall days in April:
14.3 days - Average rainfall days in May:
13.3 days - Average rainfall days in June:
9.9 days
- Average rainfall days in July:
4.8 days - Average rainfall days in August:
4.4 days - Average rainfall days in September:
6.5 days - Average rainfall days in October:
10.5 days - Average rainfall days in November:
8.7 days - Average rainfall days in December:
8.6 days
The month with the highest number of rainy days is March (15.6 days).
The month with the least rainy days is August (4.4 days).
Average snowfall
Richland, OR
- Average snowfall in January:
9.76" - Average snowfall in February:
8.03" - Average snowfall in March:
4.25" - Average snowfall in April:
1.18" - Average snowfall in May:
0.24" - Average snowfall in June:
0"
The month with the highest snowfall is December (10.59").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Richland, OR
- Average snowfall days in January:
14.3 days - Average snowfall days in February:
13.8 days - Average snowfall days in March:
9.1 days - Average snowfall days in April:
3.5 days - Average snowfall days in May:
0.4 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:
0.2 days - Average snowfall days in October:
1.6 days - Average snowfall days in November:
7.5 days - Average snowfall days in December:
14.7 days
The month with the highest number of snowfall days is December (14.7 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight / Average sunshine
Richland, 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 5min - Average daylight in June:
15h and 3min
- 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:
11h and 0min - Average daylight in November:
9h and 4min - Average daylight in December:
8h and 5min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in January:
4h and 5min - Average sunshine in February:
4h and 5min - Average sunshine in March:
7h and 2min - Average sunshine in April:
10h and 2min - Average sunshine in May:
11h and 1min - Average sunshine in June:
11h and 3min
- Average sunshine in July:
12h and 0min - Average sunshine in August:
12h and 1min - Average sunshine in September:
10h and 4min - Average sunshine in October:
7h and 3min - Average sunshine in November:
6h and 1min - Average sunshine in December:
5h and 1min
The month with the most sunshine is August (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 48min).
Average sunshine days
Richland, OR
- Average sunshine days in January:
14.8 days - Average sunshine days in February:
11.3 days - Average sunshine days in March:
11.3 days - Average sunshine days in April:
12.6 days - Average sunshine days in May:
14.3 days - Average sunshine days in June:
17.3 days
- Average sunshine days in July:
22.7 days - Average sunshine days in August:
21.9 days - Average sunshine days in September:
21.4 days - Average sunshine days in October:
18.8 days - Average sunshine days in November:
15.7 days - Average sunshine days in December:
13.9 days
The month with the most sunshine days is July (22.7 days).
The months with the least sunshine days are February and March (11.3 days).
Average UV index
Richland, OR
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover
Richland, OR
The month with the most cloud cover is February (Cloud cover 50).
The months with the least cloud cover are July and August (Cloud cover 9).
Average visibility
Richland, OR
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (4mi).
Richland, Oregon, USA
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