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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 another subzero 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's weather in January, with an average high-temperature of a still subzero cold 31.8°F (-0.1°C), subtly shifts from December's 30.7°F (-0.7°C). Weather in January »
Weather in February
The last month of the winter, February, is an icy month in Richland, Oregon, with an average temperature ranging between max 34.3°F (1.3°C) and min 22.6°F (-5.2°C). As January transitions into February, the average high-temperature rests at a wintry 34.3°F (1.3°C), maintaining a close resemblance to the previous month. Weather in February »
Weather in March
March, the first month of the spring in Richland, is also an icy month, with an average temperature varying between 41.9°F (5.5°C) and 27.3°F (-2.6°C). The start of March brings a subtle rise in the average high-temperature, moving from a cold 34.3°F (1.3°C) in February to a still wintry 41.9°F (5.5°C). Weather in March »
Weather in April
April in Richland, Oregon, is a fresh spring month, with an average temperature fluctuating between 31.1°F (-0.5°C) and 50.5°F (10.3°C). Richland's transition into April is marked by a minor temperature shift, moving from a wintry 41.9°F (5.5°C) in March to a cool 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 an average temperature ranging between max 60.8°F (16°C) and min 38.3°F (3.5°C). May's onset brings a temperature rise, moving from a fresh 50.5°F (10.3°C) in April to a comfortable 60.8°F (16°C). Weather in May »
Weather in June
The first month of the summer, June, is a pleasant month in Richland, Oregon, with temperature in the range of an average low of 44.4°F (6.9°C) and an average high of 69.4°F (20.8°C). Richland in June observes a minor temperature shift, with average high-temperatures adjusting from a comfortable 60.8°F (16°C) in May to an agreeable 69.4°F (20.8°C). Weather in June »
Weather in July
July is a moderately hot summer month in Richland, Oregon, with an average temperature fluctuating between 81.7°F (27.6°C) and 52.3°F (11.3°C). Richland's temperatures peak on average in July, reaching 81.7°F (27.6°C) at their highest and 52.3°F (11.3°C) at their lowest. In July, the heat index is appraised at 80.6°F (27°C). Weather in July »
Weather in August
The last month of the summer, August, is also a moderately hot month in Richland, Oregon, with temperature in the range of an average high of 81.3°F (27.4°C) and an average low of 53.8°F (12.1°C). Richland experiences a transition to a still moderately hot 81.3°F (27.4°C) in average high-temperatures with the arrival of August, not greatly differing from July's 81.7°F (27.6°C). Weather in August »
Weather in September
September, the first month of the autumn in Richland, is also an agreeable month, with an average temperature varying between 47.3°F (8.5°C) and 71.2°F (21.8°C). The transition into September is accompanied by a temperature decrease, with the average high-temperature shifting from a moderately hot 81.3°F (27.4°C) in August to a pleasant 71.2°F (21.8°C). Weather in September »
Weather in October
October, the same as September, is a cool autumn month in Richland, Oregon, with an average temperature fluctuating between 36.5°F (2.5°C) and 55.2°F (12.9°C). October signals a significant shift in the average high-temperature, falling from September's pleasant 71.2°F (21.8°C) to a fresh 55.2°F (12.9°C). Weather in October »
Weather in November
The last month of the autumn, November, is also an icy month in Richland, Oregon, with temperature in the range of an average low of 27°F (-2.8°C) and an average high of 40.5°F (4.7°C). November's onset brings a clear reduction in the average high-temperature, falling from a cool 55.2°F (12.9°C) in October 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). Richland's coldest month, December, registers temperatures that range from a high of 30.7°F (-0.7°C) to a low of 18.5°F (-7.5°C). Weather in December »
Updated: Jun 26, 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, in Richland, 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 much does it snow?
Throughout the year, there are 65.1 snowfall days, and 38.9" (988mm) of snow is accumulated.
What is the month with the least sunshine in Richland?
The month with the least sunshine is January, with an average of 4.8h of sunshine.
What is the month with the lowest UV index?
January is the month with the lowest UV index, with an average maximum UV index of 1.
When is Daylight Saving Time (DST)?
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?
June through September are months without snowfall.
When are the longest days?
The month with the longest days is June, with an average of 15h and 30min of daylight.
What is the warmest month?
Richland registers the average highest temperatures during July, with peaks of 81.7°F (27.6°C) and lows of 52.3°F (11.3°C).
When is the highest UV index?
July is the month with the highest UV index, with an average maximum UV index of 6.
What is the least humid month?
August is the least humid month, with an average relative humidity of 40%.
What is the driest month in Richland?
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 in Richland is August, with an average of 12.1h of sunshine.
What time of the year is the coldest?
In Richland, the average lowest temperatures are observed in December, with a high of 30.7°F (-0.7°C) and a low of 18.5°F (-7.5°C).
What is the wettest month in Richland?
The month with the most rainfall is December, when the rain falls for 8.6 days and typically aggregates up to 1.77" (45mm) of precipitation.
When does it snow the most?
The month with the most snowfall 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?
The month with the shortest days is December, 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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