Expand
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, in Trentwood, Washington, is a wintry winter month, with an average temperature fluctuating between 22.6°F (-5.2°C) and 33.3°F (0.7°C). The commencement of January introduces an average high-temperature of a still wintry 33.3°F (0.7°C), closely mirroring the preceding month. Weather in January »
Weather in February
The last month of the winter, February, is another cold month in Trentwood, Washington, with temperature in the range of an average high of 36.5°F (2.5°C) and an average low of 24.1°F (-4.4°C). The arrival of February is marked by an average high-temperature of a still cold 36.5°F (2.5°C), bearing a close resemblance to January. Weather in February »
Weather in March
The first month of the spring, March, is a chilly month in Trentwood, Washington, with an average temperature fluctuating between 29.7°F (-1.3°C) and 45°F (7.2°C). March's arrival brings a slight change in high-temperatures, adjusting from a cold 36.5°F (2.5°C) in February to a chilly 45°F (7.2°C). Weather in March »
Weather in April
April in Trentwood, Washington, is a cool spring month, with temperature in the range of an average high of 54.1°F (12.3°C) and an average low of 34.9°F (1.6°C). In Trentwood, the average high-temperature in April increases from a chilly 45°F (7.2°C) in March to a fresh 54.1°F (12.3°C). Weather in April »
Weather in May
May, the last month of the spring in Trentwood, is an enjoyable month, with an average temperature fluctuating between 65.1°F (18.4°C) and 41.2°F (5.1°C). May indicates a change in the average high-temperature, moving up from a fresh 54.1°F (12.3°C) in April to an enjoyable 65.1°F (18.4°C). Weather in May »
Weather in June
June, the first month of the summer in Trentwood, is a pleasant month, with an average temperature ranging between max 71.1°F (21.7°C) and min 46.6°F (8.1°C). The start of June brings a subtle rise in the average high-temperature, moving from an enjoyable 65.1°F (18.4°C) in May to a pleasant 71.1°F (21.7°C). Weather in June »
Weather in July
July in Trentwood, Washington, is a moderately hot summer month, with an average temperature varying between 54.1°F (12.3°C) and 82.9°F (28.3°C). The onset of July marks an increase in the average high-temperature, moving from a pleasant 71.1°F (21.7°C) in June to a moderately hot 82.9°F (28.3°C). Weather in July »
Weather in August
The last month of the summer, August, is also a moderately hot month in Trentwood, Washington, with an average temperature varying between 83.3°F (28.5°C) and 55.9°F (13.3°C). August, marked by an average high-temperature of 83.3°F (28.5°C) and a low-temperature of 55.9°F (13.3°C), is the warmest month. The heat index value during August is estimated at 82.4°F (28°C). Weather in August »
Weather in September
September, the first month of the autumn in Trentwood, is still a pleasant month, with an average temperature ranging between max 72.5°F (22.5°C) and min 48.2°F (9°C). In September, the meteorological conditions alter, with the average high-temperature shifting from a warm 83.3°F (28.5°C) in August to an agreeable 72.5°F (22.5°C). Weather in September »
Weather in October
October, the same as September, in Trentwood, Washington, is another mild autumn month, with temperature in the range of an average low of 38.3°F (3.5°C) and an average high of 55.9°F (13.3°C). Trentwood, Washington, sees a considerable decrease in average high-temperatures during October, falling from a pleasant 72.5°F (22.5°C) in September to a moderate 55.9°F (13.3°C). Weather in October »
Weather in November
The last month of the autumn, November, is also a wintry month in Trentwood, Washington, with an average temperature fluctuating between 41°F (5°C) and 29.3°F (-1.5°C). Trentwood witnesses a significant decrease in the average high-temperature with the arrival of November, falling from October's refreshing 55.9°F (13.3°C) to an icy 41°F (5°C). Weather in November »
Weather in December
December, the first month of the winter in Trentwood, is also an icy month, with temperature in the range of an average high of 32°F (0°C) and an average low of 21.9°F (-5.6°C). In Trentwood, December is the coldest month, with temperatures averaging a high of 32°F (0°C) and a low of 21.9°F (-5.6°C). Weather in December »
Updated: Jun 29, 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?
The most humid month is January, with an average relative humidity of 91%.
What is the rainiest month?
January is the month with the most rainfall in Trentwood. Rain falls for 9.7 days and accumulates 2.28" (58mm) of precipitation.
How much does it rain?
In Trentwood, during the entire year, the rain falls for 125.4 days and collects up to 17.28" (439mm) of precipitation.
When does it snow?
Months with snowfall are January through May, September through December.
What is the snowiest month?
The month with the most snowfall is January, when snow falls for 13.3 days and typically aggregates up to 10.51" (267mm) of snow.
How many days does it snow?
Throughout the year, there are 56.4 snowfall days, and 37.4" (950mm) of snow is accumulated.
What is the month with the least sunshine?
January and December, with an average of 3.8h of sunshine, are months with the least sunshine.
When is Daylight Saving Time (DST)?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Trentwood, 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 August are months without snowfall.
When are the longest days in Trentwood?
June has the longest days of the year, with an average of 15h and 54min of daylight.
What is the driest month?
The months with the least rainfall are July and August Rain falls for 5.1 days and accumulates 0.35" (9mm) of rain.
What is the month with the highest UV index?
The month with the highest UV index is July, with an average maximum UV index of 6.
What part of the year is the hottest?
August is Trentwood's warmest month, registering average high temperatures of 83.3°F (28.5°C) and lows of 55.9°F (13.3°C).
What is the least humid month?
August is the least humid month in Trentwood, with an average relative humidity of 43%.
What month has the most sunshine in Trentwood?
The month with the most sunshine is August, with an average of 12h of sunshine.
What is the coldest month?
Trentwood's temperature records reveal December as the coldest month, marked by average highs of 32°F (0°C) and lows of 21.9°F (-5.6°C).
What is the month with the shortest days?
The month with the shortest days is December, with an average of 8h and 30min of daylight.
What is the month with the lowest UV index?
The month with the lowest UV index is December, with an average maximum UV index of 1.
Average temperature
Trentwood, WA
The warmest month (with the highest average high temperature) is August (83.3°F).
The month with the lowest average high temperature is December (32°F).
The month with the highest average low temperature is August (55.9°F).
The coldest month (with the lowest average low temperature) is December (21.9°F).
Average pressure
Trentwood, WA
- Average pressure in January:
30.19"Hg - Average pressure in February:
30.11"Hg - Average pressure in March:
30.03"Hg - Average pressure in April:
29.99"Hg - Average pressure in May:
29.94"Hg - Average pressure in June:
29.92"Hg
- Average pressure in July:
29.92"Hg - Average pressure in August:
29.91"Hg - Average pressure in September:
29.96"Hg - Average pressure in October:
30.05"Hg - Average pressure in November:
30.11"Hg - Average pressure in December:
30.17"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is August (29.91"Hg).
Average wind speed
Trentwood, WA
- Average wind speed in January:
4.8mph - Average wind speed in February:
5.1mph - Average wind speed in March:
5.9mph - Average wind speed in April:
6.1mph - Average wind speed in May:
5.5mph - Average wind speed in June:
5.4mph
- Average wind speed in July:
5mph - Average wind speed in August:
4.8mph - Average wind speed in September:
4.9mph - Average wind speed in October:
5mph - Average wind speed in November:
5.1mph - Average wind speed in December:
4.7mph
The windiest month (with the highest average wind speed) is April (6.1mph).
The calmest month (with the lowest average wind speed) is December (4.7mph).
Average humidity
Trentwood, WA
The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is August (43%).
Average rainfall
Trentwood, WA
- Average rainfall in January:
2.28" - Average rainfall in February:
1.61" - Average rainfall in March:
2.17" - Average rainfall in April:
1.42" - Average rainfall in May:
1.61" - Average rainfall in June:
1.26"
- Average rainfall in July:
0.35" - Average rainfall in August:
0.35" - Average rainfall in September:
0.63" - Average rainfall in October:
1.61" - Average rainfall in November:
1.77" - Average rainfall in December:
2.2"
The wettest month (with the highest rainfall) is January (2.28").
The driest months (with the least rainfall) are July and August (0.35").
Average rainfall days
Trentwood, WA
- Average rainfall days in January:
9.7 days - Average rainfall days in February:
8.8 days - Average rainfall days in March:
16 days - Average rainfall days in April:
14.8 days - Average rainfall days in May:
12.7 days - Average rainfall days in June:
10.9 days
- Average rainfall days in July:
5.1 days - Average rainfall days in August:
5.5 days - Average rainfall days in September:
7.9 days - Average rainfall days in October:
12.2 days - Average rainfall days in November:
12.9 days - Average rainfall days in December:
8.9 days
The month with the highest number of rainy days is March (16 days).
The month with the least rainy days is July (5.1 days).
Average snowfall
Trentwood, WA
- Average snowfall in January:
10.51" - Average snowfall in February:
8.23" - Average snowfall in March:
4.65" - Average snowfall in April:
1.18" - Average snowfall in May:
0.04" - Average snowfall in June:
0"
The month with the highest snowfall is January (10.51").
The months with the least snowfall are June, July and August (0").
Average snowfall days
Trentwood, WA
- Average snowfall days in January:
13.3 days - Average snowfall days in February:
11.2 days - Average snowfall days in March:
7.8 days - Average snowfall days in April:
3 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:
0.2 days - Average snowfall days in October:
0.5 days - Average snowfall days in November:
6.3 days - Average snowfall days in December:
13.9 days
The month with the highest number of snowfall days is December (13.9 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight / Average sunshine
Trentwood, WA
- Average daylight in January:
8h and 5min - Average daylight in February:
10h and 2min - Average daylight in March:
11h and 5min - Average daylight in April:
13h and 4min - Average daylight in May:
15h and 1min - Average daylight in June:
15h and 5min
- Average daylight in July:
15h and 3min - Average daylight in August:
14h and 1min - Average daylight in September:
12h and 3min - Average daylight in October:
10h and 5min - Average daylight in November:
9h and 2min - Average daylight in December:
8h and 3min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in January:
3h and 5min - Average sunshine in February:
4h and 1min - Average sunshine in March:
6h and 1min - Average sunshine in April:
9h and 0min - Average sunshine in May:
10h and 2min - Average sunshine in June:
10h and 3min
- Average sunshine in July:
11h and 5min - Average sunshine in August:
12h and 0min - Average sunshine in September:
10h and 1min - Average sunshine in October:
6h and 2min - Average sunshine in November:
4h and 5min - Average sunshine in December:
3h and 5min
The month with the most sunshine is August (Average sunshine: 12h and 0min).
The months with the least sunshine are January and December (Average sunshine: 3h and 48min).
Average sunshine days
Trentwood, WA
- Average sunshine days in January:
13.2 days - Average sunshine days in February:
11.7 days - Average sunshine days in March:
10.3 days - Average sunshine days in April:
12.6 days - Average sunshine days in May:
16.4 days - Average sunshine days in June:
17.3 days
- Average sunshine days in July:
24.3 days - Average sunshine days in August:
23.2 days - Average sunshine days in September:
20.8 days - Average sunshine days in October:
17.5 days - Average sunshine days in November:
12.3 days - Average sunshine days in December:
13.4 days
The month with the most sunshine days is July (24.3 days).
The month with the least sunshine days is March (10.3 days).
Average UV index
Trentwood, WA
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover
Trentwood, WA
The month with the most cloud cover is January (Cloud cover 62).
The months with the least cloud cover are July and August (Cloud cover 13).
Average visibility
Trentwood, WA
The months with the highest visibility are April, May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February and December (4mi).
Trentwood, Washington, USA
Weather forecast for your location
1. Click Locate me button
2. Allow the app to use your location
2. Allow the app to use your location