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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 Happy Valley, Oregon, with an average temperature ranging between min 35.2°F (1.8°C) and max 46.2°F (7.9°C). The onset of January brings an average high-temperature of a still frosty 46.2°F (7.9°C), nearly matching the December temperature. Weather in January »
Weather in February
February, the last month of the winter in Happy Valley, is also a frosty month, with an average temperature fluctuating between 35.6°F (2°C) and 47.5°F (8.6°C). With February's arrival, Happy Valley's weather records an average high-temperature of a still frosty 47.5°F (8.6°C), marking little difference from January's 46.2°F (7.9°C). Weather in February »
Weather in March
The first month of the spring, March, is a fresh month in Happy Valley, Oregon, with an average temperature varying between 37.9°F (3.3°C) and 52.5°F (11.4°C). The shift from February to March is characterized by an average high-temperature of a cool 52.5°F (11.4°C), not significantly different from the 47.5°F (8.6°C) of February. Weather in March »
Weather in April
April in Happy Valley, Oregon, is a mild spring month, with an average temperature fluctuating between 58.6°F (14.8°C) and 39.7°F (4.3°C). Happy Valley in April denotes a subtle temperature transition, adjusting from an average high of a fresh 52.5°F (11.4°C) in March to a moderate 58.6°F (14.8°C). Weather in April »
Weather in May
May, the last month of the spring in Happy Valley, is an enjoyable month, with an average temperature fluctuating between 44.1°F (6.7°C) and 66.7°F (19.3°C). The beginning of May signals a minor rise in the average high-temperature, moving from a moderate 58.6°F (14.8°C) in April to a still refreshing 66.7°F (19.3°C). Weather in May »
Weather in June
The first month of the summer, June, is an agreeable month in Happy Valley, Oregon, with temperature in the range of an average high of 72.1°F (22.3°C) and an average low of 48°F (8.9°C). The onset of June marks a slight increase in the average high-temperature, moving from a refreshing 66.7°F (19.3°C) in May to an agreeable 72.1°F (22.3°C). Weather in June »
Weather in July
July in Happy Valley, Oregon, is a moderately hot summer month, with an average temperature varying between 80.8°F (27.1°C) and 52.3°F (11.3°C). Happy Valley, Oregon, perceives a slight temperature ascent during July, with average high-temperatures adjusting from an agreeable 72.1°F (22.3°C) in June to a warm 80.8°F (27.1°C). Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Happy Valley, Oregon, with an average temperature fluctuating between 54.5°F (12.5°C) and 81.7°F (27.6°C). With an average high-temperature of 81.7°F (27.6°C) and an average low-temperature of 54.5°F (12.5°C), August is the warmest month. The heat index for August is evaluated at 84.2°F (29°C). Weather in August »
Weather in September
September, the first month of the autumn in Happy Valley, is also a moderately hot month, with an average temperature fluctuating between 51.1°F (10.6°C) and 74.1°F (23.4°C). The move into September indicates a slight reduction in the average high-temperature, down from August's moderately hot 81.7°F (27.6°C) to a still warm 74.1°F (23.4°C). Weather in September »
Weather in October
October, the same as September, is another comfortable autumn month in Happy Valley, Oregon, with an average temperature varying between 45.5°F (7.5°C) and 61.9°F (16.6°C). With the beginning of October, the average high-temperature shows a decrease, transitioning from a warm 74.1°F (23.4°C) in September to a comfortable 61.9°F (16.6°C). Weather in October »
Weather in November
November, the last month of the autumn in Happy Valley, is another cool month, with an average temperature fluctuating between 51.1°F (10.6°C) and 40.1°F (4.5°C). As October transitions into November, Happy Valley sees a drop in the average high-temperature, transitioning from a comfortable 61.9°F (16.6°C) to a cool 51.1°F (10.6°C). Weather in November »
Weather in December
December, the first month of the winter in Happy Valley, is also a frosty month, with an average temperature fluctuating between 44.4°F (6.9°C) and 34.7°F (1.5°C). The coldest time of the year is December, with temperatures averaging a high of 44.4°F (6.9°C) and a low of 34.7°F (1.5°C). Weather in December »
[Resources]Frequently asked questions
How much does it rain in Happy Valley?
In Happy Valley, during the entire year, the rain falls for 172.2 days and collects up to 31.3" (795mm) of precipitation.
When does it snow in Happy Valley?
Months with snowfall in Happy Valley are January through March, November and December.
How much does it snow in Happy Valley?
In Happy Valley, during the entire year, snow falls for 6.5 days and aggregates up to 4.13" (105mm) of snow.
What are the months with the lowest UV index in Happy Valley?
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
What is the most humid month in Happy Valley?
With an average relative humidity of 84%, February is the most humid month.
What is the month with the least sunshine in Happy Valley?
The month with the least sunshine is February, with an average of 4.2h of sunshine.
What is the snowiest month in Happy Valley?
March is the month with the most snowfall in Happy Valley, Oregon. Snow falls for 1.6 days and accumulates 1.46" (37mm) of snow.
When is Daylight Saving Time (DST) in Happy Valley?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Happy Valley, Oregon, 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 Happy Valley?
April through October are months without snowfall in Happy Valley, Oregon.
When are the longest days in Happy Valley?
With an average of 15h and 36min of daylight, June has the longest days of the year in Happy Valley, Oregon.
What is the driest month in Happy Valley?
July is the month with the least rainfall in Happy Valley, Oregon. Rain falls for 4.8 days and accumulates 0.31" (8mm) of precipitation.
What is the month with the highest UV index in Happy Valley?
The month with the highest UV index in Happy Valley, Oregon, is July, with an average maximum UV index of 6.
What month is the hottest in Happy Valley?
The warmest time of the year is August, with temperatures averaging a high of 81.7°F (27.6°C) and a low of 54.5°F (12.5°C).
What is the least humid month in Happy Valley?
With an average relative humidity of 63%, August is the least humid month.
What month has the most sunshine in Happy Valley?
August has the most sunshine of the year, with an average of 11h of sunshine.
What is the coldest month in Happy Valley?
December brings the lowest temperatures in Happy Valley, Oregon, with an average high of 44.4°F (6.9°C) and an average low of 34.7°F (1.5°C).
What is the rainiest month in Happy Valley?
The month with the most rainfall is December, when the rain falls for 18.5 days and typically aggregates up to 4.57" (116mm) of precipitation.
What is the month with the shortest days in Happy Valley?
With an average of 8h and 48min of daylight, December has the shortest days of the year.
Average temperature
Happy Valley, OR
The warmest month (with the highest average high temperature) is August (81.7°F).
The month with the lowest average high temperature is December (44.4°F).
The month with the highest average low temperature is August (54.5°F).
The coldest month (with the lowest average low temperature) is December (34.7°F).
Average pressure
Happy Valley, OR
- Average pressure in January:
30.12"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:
30.03"Hg - Average pressure in August:
30"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 (30.12"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).
Average wind speed
Happy Valley, OR
- Average wind speed in January:
6mph - Average wind speed in February:
5.7mph - Average wind speed in March:
5.4mph - Average wind speed in April:
4.8mph - Average wind speed in May:
4.2mph - Average wind speed in June:
4mph
- Average wind speed in July:
4mph - Average wind speed in August:
3.7mph - Average wind speed in September:
3.9mph - Average wind speed in October:
4.7mph - Average wind speed in November:
5.7mph - Average wind speed in December:
5.7mph
The windiest month (with the highest average wind speed) is January (6mph).
The calmest month (with the lowest average wind speed) is August (3.7mph).
Average humidity
Happy Valley, OR
The month with the highest relative humidity is February (84%).
The month with the lowest relative humidity is August (63%).
Average rainfall
Happy Valley, OR
- Average rainfall in January:
4.25" - Average rainfall in February:
3.35" - Average rainfall in March:
3.46" - Average rainfall in April:
3.19" - Average rainfall in May:
1.77" - Average rainfall in June:
1.46"
- Average rainfall in July:
0.31" - Average rainfall in August:
0.35" - Average rainfall in September:
1.69" - Average rainfall in October:
3.35" - Average rainfall in November:
3.54" - 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
Happy Valley, OR
- Average rainfall days in January:
17.9 days - Average rainfall days in February:
17 days - Average rainfall days in March:
20.4 days - Average rainfall days in April:
18.6 days - Average rainfall days in May:
13.9 days - Average rainfall days in June:
11.4 days
- Average rainfall days in July:
4.8 days - Average rainfall days in August:
5 days - Average rainfall days in September:
10.4 days - Average rainfall days in October:
15.5 days - Average rainfall days in November:
18.8 days - Average rainfall days in December:
18.5 days
The month with the highest number of rainy days is March (20.4 days).
The month with the least rainy days is July (4.8 days).
Average snowfall
Happy Valley, OR
The month with the highest snowfall is March (1.46").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days
Happy Valley, OR
- Average snowfall days in January:
1.5 days - Average snowfall days in February:
2.3 days - Average snowfall days in March:
1.6 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:
0.2 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
Happy Valley, 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 2min - 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 2min - Average sunshine in February:
4h and 1min - Average sunshine in March:
5h and 5min - Average sunshine in April:
7h and 5min - Average sunshine in May:
8h and 5min - Average sunshine in June:
9h and 2min
- 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 3min - Average sunshine in November:
4h and 4min - Average sunshine in December:
4h and 2min
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 12min).
Average sunshine days
Happy Valley, OR
- Average sunshine days in January:
11.2 days - Average sunshine days in February:
8.3 days - Average sunshine days in March:
8.7 days - Average sunshine days in April:
8.5 days - Average sunshine days in May:
14.7 days - Average sunshine days in June:
16.3 days
- Average sunshine days in July:
23.9 days - Average sunshine days in August:
23.8 days - Average sunshine days in September:
17.5 days - Average sunshine days in October:
14.1 days - Average sunshine days in November:
9.6 days - Average sunshine days in December:
10.9 days
The month with the most sunshine days is July (23.9 days).
The month with the least sunshine days is February (8.3 days).
Average UV index
Happy Valley, 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
Happy Valley, OR
The month with the most cloud cover is February (Cloud cover 57).
The month with the least cloud cover is August (Cloud cover 22).
Average visibility
Happy Valley, OR
The months with the highest visibility are July, August, September and October (6mi).
The months with the lowest visibility are January, February, March, April, May, June, November and December (5mi).
Happy Valley, Oregon, USA
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