Climate and monthly weather forecastClackamas, OR
Climate and monthly weather forecast
Weather in January
January, the same as December, in Clackamas, Oregon, is a frosty winter month, with temperature in the range of an average low of 35.2°F (1.8°C) and an average high of 46.2°F (7.9°C). With the onset of January, the average high-temperature stands at a still chilly 46.2°F (7.9°C), closely aligned with December's 44.4°F (6.9°C). Weather in January »Weather in February
February, the last month of the winter in Clackamas, is also a frosty month, with temperature in the range of an average high of 47.1°F (8.4°C) and an average low of 35.1°F (1.7°C). February's onset brings an average high-temperature of a still chilly 47.1°F (8.4°C), showing a minute difference from January's 46.2°F (7.9°C). Weather in February »Weather in March
March, the first month of the spring in Clackamas, is a cool month, with an average temperature ranging between min 37.8°F (3.2°C) and max 52.2°F (11.2°C). At the onset of March, Clackamas records an average high-temperature of a fresh 52.2°F (11.2°C), showing little deviation from the preceding month. Weather in March »Weather in April
April is a mild spring month in Clackamas, Oregon, with an average temperature fluctuating between 58.5°F (14.7°C) and 39.4°F (4.1°C). April showcases a minor temperature ascent, adjusting from March's cool 52.2°F (11.2°C) to a moderate 58.5°F (14.7°C). Weather in April »Weather in May
The last month of the spring, May, is a refreshing month in Clackamas, Oregon, with an average temperature ranging between min 43.5°F (6.4°C) and max 66.6°F (19.2°C). With the transition into May, Clackamas experiences a subtle uplift in average high-temperatures, adjusting from 58.5°F (14.7°C) in April to a still refreshing 66.6°F (19.2°C). Weather in May »Weather in June
The first month of the summer, June, is a pleasant month in Clackamas, Oregon, with an average temperature ranging between max 71.8°F (22.1°C) and min 47.5°F (8.6°C). The onset of June brings an average high-temperature of a pleasant 71.8°F (22.1°C), nearly matching the May temperature. Weather in June »Weather in July
July in Clackamas, Oregon, is a moderately hot summer month, with an average temperature fluctuating between 80.2°F (26.8°C) and 51.6°F (10.9°C). As Clackamas welcomes July, the average high-temperature displays a subtle shift, adjusting from an agreeable 71.8°F (22.1°C) in June to a warm 80.2°F (26.8°C). Weather in July »Weather in August
The last month of the summer, August, is another warm month in Clackamas, Oregon, with temperature in the range of an average low of 54°F (12.2°C) and an average high of 81.1°F (27.3°C). August is the warmest month, exhibiting average temperatures of 81.1°F (27.3°C) at the peak and 54°F (12.2°C) at the base. During August, the heat index is calculated to be 84.2°F (29°C). Weather in August »Weather in September
The first month of the autumn, September, is still a warm month in Clackamas, Oregon, with an average temperature varying between 50.5°F (10.3°C) and 73.6°F (23.1°C). The shift from August to September coincides with a small decrease in the average high-temperature, down to a still moderately hot 73.6°F (23.1°C) from 81.1°F (27.3°C). Weather in September »Weather in October
October, like September, in Clackamas, Oregon, is another enjoyable autumn month, with an average temperature fluctuating between 45.1°F (7.3°C) and 61.3°F (16.3°C). Clackamas observes a minor decrease in the average high-temperature with the arrival of October, falling from September's moderately hot 73.6°F (23.1°C) to a refreshing 61.3°F (16.3°C). Weather in October »Weather in November
The last month of the autumn, November, is another cool month in Clackamas, Oregon, with temperature in the range of an average low of 39.7°F (4.3°C) and an average high of 50.9°F (10.5°C). As November commences, the average high-temperature shows a reduction, transitioning from an enjoyable 61.3°F (16.3°C) in October to a fresh 50.9°F (10.5°C). Weather in November »Weather in December
December, the first month of the winter in Clackamas, is also a frosty month, with an average temperature ranging between min 34.3°F (1.3°C) and max 44.4°F (6.9°C). During the coldest month, December, temperatures average a high of 44.4°F (6.9°C) and a low of 34.3°F (1.3°C). Weather in December »Updated: Aug 21, 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
Throughout the year, there are 169.9 rainfall days, and 32.76" (832mm) of precipitation is accumulated.
January through March, November and December are months with snowfall.
In Clackamas, during the entire year, snow falls for 6.1 days and aggregates up to 4.17" (106mm) of snow.
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
The most humid month is February, with an average relative humidity of 84%.
February is the month with the most snowfall in Clackamas. Snow falls for 2.3 days and accumulates 1.5" (38mm) of snow.
With an average of 4.3h of sunshine, February has the least sunshine of the year.
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.
April through October are months without snowfall.
With an average of 15h and 36min of daylight, June has the longest days of the year.
July is the month with the least rainfall. Rain falls for 4.3 days and accumulates 0.24" (6mm) of precipitation.
With an average maximum UV index of 6, July is the month with the highest UV index.
With average high temperatures of 81.1°F (27.3°C) and lows of 54°F (12.2°C), August is the warmest month.
With an average relative humidity of 64%, August is the least humid month.
The month with the most sunshine is August, with an average of 11.1h of sunshine.
December is the month that records the lowest temperatures, with averages ranging from a high of 44.4°F (6.9°C) to a low of 34.3°F (1.3°C).
December is the month with the most rainfall. Rain falls for 19.2 days and accumulates 5.16" (131mm) of precipitation.
December has the shortest days of the year, with an average of 8h and 48min of daylight.
Average temperature
Clackamas, OR
The warmest month (with the highest average high temperature) is August (81.1°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°F).
The coldest month (with the lowest average low temperature) is December (34.3°F).
Average pressure
Clackamas, 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:
30.11"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
Clackamas, OR
- Average wind speed in January:
6mph - Average wind speed in February:
5.7mph - Average wind speed in March:
5.5mph - Average wind speed in April:
4.8mph - Average wind speed in May:
4.1mph - Average wind speed in June:
4mph
- Average wind speed in July:
3.8mph - Average wind speed in August:
3.5mph - 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 (3.5mph).
Average humidity
Clackamas, OR
The month with the highest relative humidity is February (84%).
The month with the lowest relative humidity is August (64%).
Average rainfall
Clackamas, OR
- Average rainfall in January:
4.72" - Average rainfall in February:
3.74" - Average rainfall in March:
3.86" - Average rainfall in April:
3.23" - Average rainfall in May:
1.81" - Average rainfall in June:
1.18"
The wettest month (with the highest rainfall) is December (5.16").
The driest month (with the least rainfall) is July (0.24").
Average rainfall days
Clackamas, OR
- Average rainfall days in January:
18.4 days - Average rainfall days in February:
17.3 days - Average rainfall days in March:
20.3 days - Average rainfall days in April:
18.7 days - Average rainfall days in May:
13.7 days - Average rainfall days in June:
10.5 days
- Average rainfall days in July:
4.3 days - Average rainfall days in August:
4 days - Average rainfall days in September:
9.5 days - Average rainfall days in October:
15.2 days - Average rainfall days in November:
18.8 days - Average rainfall days in December:
19.2 days
The month with the highest number of rainy days is March (20.3 days).
The month with the least rainy days is August (4 days).
Average snowfall
Clackamas, OR
The month with the highest snowfall is February (1.5").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days
Clackamas, OR
- Average snowfall days in January:
1.3 days - Average snowfall days in February:
2.3 days - Average snowfall days in March:
1.3 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:
0.3 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
Clackamas, OR
- Average daylight in January:
9h and 12min - Average daylight in February:
10h and 24min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 36min - Average daylight in May:
14h and 54min - Average daylight in June:
15h and 36min
- Average daylight in July:
15h and 18min - Average daylight in August:
14h and 0min - Average daylight in September:
12h and 30min - Average daylight in October:
10h and 54min - Average daylight in November:
9h and 30min - Average daylight in December:
8h and 48min
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 24min - Average sunshine in February:
4h and 18min - Average sunshine in March:
5h and 54min - Average sunshine in April:
7h and 48min - Average sunshine in May:
9h and 0min - Average sunshine in June:
9h and 36min
- Average sunshine in July:
11h and 0min - Average sunshine in August:
11h and 6min - Average sunshine in September:
9h and 24min - Average sunshine in October:
5h and 36min - Average sunshine in November:
4h and 48min - Average sunshine in December:
4h and 24min
The month with the most sunshine is August (Average sunshine: 11h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 18min).
Average sunshine days
Clackamas, OR
- Average sunshine days in January:
11.1 days - Average sunshine days in February:
8.1 days - Average sunshine days in March:
8.8 days - Average sunshine days in April:
9.7 days - Average sunshine days in May:
15.8 days - Average sunshine days in June:
17.4 days
- Average sunshine days in July:
26.2 days - Average sunshine days in August:
25.3 days - Average sunshine days in September:
19 days - Average sunshine days in October:
14.6 days - Average sunshine days in November:
9.7 days - Average sunshine days in December:
10.5 days
The month with the most sunshine days is July (26.2 days).
The month with the least sunshine days is February (8.1 days).
Average UV index
Clackamas, 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
Clackamas, 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
Clackamas, 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).
