Climate and monthly weather forecastTerrace Heights, WA
Climate and monthly weather forecast
Weather in January
January, like December, in Terrace Heights, Washington, is an icy winter month, with an average temperature ranging between min 26.6°F (-3°C) and max 37.6°F (3.1°C). The shift into January records an average high-temperature of a still cold 37.6°F (3.1°C), subtly varied from December's 36.9°F (2.7°C). Weather in January »Weather in February
The last month of the winter, February, is also an icy month in Terrace Heights, Washington, with an average temperature varying between 28.9°F (-1.7°C) and 41.5°F (5.3°C). February notes an average high-temperature of a still cold 41.5°F (5.3°C), subtly differing from January's 37.6°F (3.1°C). Weather in February »Weather in March
March, the first month of the spring in Terrace Heights, is a chilly month, with temperature in the range of an average low of 34.7°F (1.5°C) and an average high of 49.5°F (9.7°C). The start of March brings a subtle rise in the average high-temperature, moving from an icy 41.5°F (5.3°C) in February to a frosty 49.5°F (9.7°C). Weather in March »Weather in April
April is a moderate spring month in Terrace Heights, Washington, with an average temperature fluctuating between 59.2°F (15.1°C) and 40.1°F (4.5°C). April shows a rise in the average high-temperature, moving from March's chilly 49.5°F (9.7°C) to a refreshing 59.2°F (15.1°C). Weather in April »Weather in May
May, the last month of the spring in Terrace Heights, is a pleasant month, with an average temperature varying between 69.3°F (20.7°C) and 47.5°F (8.6°C). May's arrival is marked by an increase in the average high-temperature, moving from a mild 59.2°F (15.1°C) in April to an agreeable 69.3°F (20.7°C). Weather in May »Weather in June
June, the first month of the summer in Terrace Heights, is a warm month, with an average temperature fluctuating between 52.3°F (11.3°C) and 76.5°F (24.7°C). Terrace Heights's weather in June shows a minor rise in the average high-temperature, moving slightly up from May's pleasant 69.3°F (20.7°C) to a moderately hot 76.5°F (24.7°C). Weather in June »Weather in July
July is a tropical summer month in Terrace Heights, Washington, with an average temperature fluctuating between 59.2°F (15.1°C) and 86.2°F (30.1°C). July sees a rise in the average high-temperature, climbing from a warm 76.5°F (24.7°C) in June to a hot 86.2°F (30.1°C). Weather in July »Weather in August
The last month of the summer, August, is also a hot month in Terrace Heights, Washington, with temperature in the range of an average low of 60.3°F (15.7°C) and an average high of 86.5°F (30.3°C). Terrace Heights's temperatures tend to reach their peak averages in August, with a high of 86.5°F (30.3°C) and a low of 60.3°F (15.7°C). Weather in August »Weather in September
The first month of the autumn, September, is still a warm month in Terrace Heights, Washington, with an average temperature fluctuating between 74.8°F (23.8°C) and 53.4°F (11.9°C). With September's onset, the average high-temperature recedes from August's tropical 86.5°F (30.3°C) to a warm 74.8°F (23.8°C). Weather in September »Weather in October
October, the same as September, in Terrace Heights, Washington, is a moderate autumn month, with temperature in the range of an average low of 42.6°F (5.9°C) and an average high of 60.1°F (15.6°C). A clear reduction in the average high-temperature marks the arrival of October, falling from a warm 74.8°F (23.8°C) in September to a mild 60.1°F (15.6°C). Weather in October »Weather in November
The last month of the autumn, November, is another chilly month in Terrace Heights, Washington, with an average temperature ranging between max 46.8°F (8.2°C) and min 32.7°F (0.4°C). Stepping into November, Terrace Heights observes a temperature decline, with the average high falling from October's mild 60.1°F (15.6°C) to a frosty 46.8°F (8.2°C). Weather in November »Weather in December
December, the first month of the winter in Terrace Heights, is also an icy month, with temperature in the range of an average high of 36.9°F (2.7°C) and an average low of 25.5°F (-3.6°C). December, with average temperatures reaching a high of 36.9°F (2.7°C) and a low of 25.5°F (-3.6°C), is the coldest month. Weather in December »Updated: Aug 13, 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
With an average relative humidity of 81%, January is the most humid month.
January is the month with the most rainfall. Rain falls for 10.3 days and accumulates 0.87" (22mm) of precipitation.
In Terrace Heights, during the entire year, the rain falls for 82.2 days and collects up to 5.43" (138mm) of precipitation.
January through March, September, November and December are months with snowfall.
Throughout the year, there are 18.5 snowfall days, and 7.8" (198mm) of snow is accumulated.
The month with the least sunshine is January, with an average of 5.6h of sunshine.
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2.
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 August and October are months without snowfall in Terrace Heights.
The month with the longest days is June, with an average of 15h and 48min of daylight.
The months with the lowest humidity in Terrace Heights are July and August, with an average relative humidity of 39%.
The month with the least rainfall is July, when the rain falls for 2.1 days and typically collects 0.08" (2mm) of precipitation.
July and August, with an average of 12.1h of sunshine, are months with the most sunshine.
July is the month with the highest UV index, with an average maximum UV index of 7.
Terrace Heights's temperature records reveal August as the warmest month, marked by average highs of 86.5°F (30.3°C) and lows of 60.3°F (15.7°C).
December, noted for its average high-temperature of 36.9°F (2.7°C) and an average low-temperature of 25.5°F (-3.6°C), is considered the coldest month.
The month with the most snowfall is December, when snow falls for 5.4 days and typically aggregates up to 2.76" (70mm) of snow.
The month with the shortest days is December, with an average of 8h and 36min of daylight.
Average temperature
Terrace Heights, WA
The warmest month (with the highest average high temperature) is August (86.5°F).
The month with the lowest average high temperature is December (36.9°F).
The month with the highest average low temperature is August (60.3°F).
The coldest month (with the lowest average low temperature) is December (25.5°F).
Average pressure
Terrace Heights, WA
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.09"Hg - Average pressure in March:
30.01"Hg - Average pressure in April:
30.01"Hg - Average pressure in May:
29.97"Hg - Average pressure in June:
29.96"Hg
- Average pressure in July:
29.96"Hg - Average pressure in August:
29.93"Hg - Average pressure in September:
29.97"Hg - Average pressure in October:
30.04"Hg - Average pressure in November:
30.07"Hg - Average pressure in December:
30.14"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is August (29.93"Hg).
Average wind speed
Terrace Heights, WA
- Average wind speed in January:
4.5mph - Average wind speed in February:
4.9mph - Average wind speed in March:
5.9mph - Average wind speed in April:
6.8mph - Average wind speed in May:
6.8mph - Average wind speed in June:
7.1mph
- Average wind speed in July:
6.7mph - Average wind speed in August:
6.5mph - Average wind speed in September:
6mph - Average wind speed in October:
5.3mph - Average wind speed in November:
5mph - Average wind speed in December:
4.4mph
The windiest month (with the highest average wind speed) is June (7.1mph).
The calmest month (with the lowest average wind speed) is December (4.4mph).
Average humidity
Terrace Heights, WA
The month with the highest relative humidity is January (81%).
The months with the lowest relative humidity are July and August (39%).
Average rainfall
Terrace Heights, WA
- Average rainfall in January:
0.87" - Average rainfall in February:
0.59" - Average rainfall in March:
0.63" - Average rainfall in April:
0.31" - Average rainfall in May:
0.63" - Average rainfall in June:
0.24"
- Average rainfall in July:
0.08" - Average rainfall in August:
0.16" - Average rainfall in September:
0.24" - Average rainfall in October:
0.43" - Average rainfall in November:
0.43" - Average rainfall in December:
0.83"
The wettest month (with the highest rainfall) is January (0.87").
The driest month (with the least rainfall) is July (0.08").
Average rainfall days
Terrace Heights, WA
- Average rainfall days in January:
10.3 days - Average rainfall days in February:
7.8 days - Average rainfall days in March:
10.8 days - Average rainfall days in April:
7.8 days - Average rainfall days in May:
6.8 days - Average rainfall days in June:
4.8 days
- Average rainfall days in July:
2.1 days - Average rainfall days in August:
2 days - Average rainfall days in September:
3.9 days - Average rainfall days in October:
8 days - Average rainfall days in November:
8.8 days - Average rainfall days in December:
9.1 days
The month with the highest number of rainy days is March (10.8 days).
The month with the least rainy days is August (2 days).
Average snowfall
Terrace Heights, WA
The month with the highest snowfall is December (2.76").
The months with the least snowfall are April, May, June, July, August and October (0").
Average snowfall days
Terrace Heights, WA
- Average snowfall days in January:
4.5 days - Average snowfall days in February:
4.3 days - Average snowfall days in March:
2.1 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:
0.1 days - Average snowfall days in October:
0 days - Average snowfall days in November:
2 days - Average snowfall days in December:
5.4 days
The month with the highest number of snowfall days is December (5.4 days).
The months with the least snowfall days are May, June, July, August and October (0 days).
Average daylight / Average sunshine
Terrace Heights, WA
- Average daylight in January:
9h and 6min - 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:
15h and 0min - Average daylight in June:
15h and 48min
- Average daylight in July:
15h and 24min - Average daylight in August:
14h and 6min - Average daylight in September:
12h and 30min - Average daylight in October:
10h and 54min - Average daylight in November:
9h and 24min - Average daylight in December:
8h and 36min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in January:
5h and 36min - Average sunshine in February:
6h and 12min - Average sunshine in March:
8h and 30min - Average sunshine in April:
11h and 0min - Average sunshine in May:
11h and 24min - Average sunshine in June:
11h and 54min
- Average sunshine in July:
12h and 6min - Average sunshine in August:
12h and 6min - Average sunshine in September:
11h and 6min - Average sunshine in October:
7h and 6min - Average sunshine in November:
6h and 48min - Average sunshine in December:
5h and 54min
The months with the most sunshine are July and August (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 5h and 36min).
Average sunshine days
Terrace Heights, WA
- Average sunshine days in January:
17 days - Average sunshine days in February:
15.8 days - Average sunshine days in March:
16.4 days - Average sunshine days in April:
18.8 days - Average sunshine days in May:
21.2 days - Average sunshine days in June:
23 days
- Average sunshine days in July:
27.5 days - Average sunshine days in August:
27.4 days - Average sunshine days in September:
23.8 days - Average sunshine days in October:
20 days - Average sunshine days in November:
17.9 days - Average sunshine days in December:
17.3 days
The month with the most sunshine days is July (27.5 days).
The month with the least sunshine days is February (15.8 days).
Average UV index
Terrace Heights, WA
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover
Terrace Heights, WA
The month with the most cloud cover is January (Cloud cover 40).
The months with the least cloud cover are July and August (Cloud cover 9).
Average visibility
Terrace Heights, WA
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
