Climate and monthly weather forecastPomona Heights, WA
Climate and monthly weather forecast
Weather in January
January, like December, in Pomona Heights, Washington, is another cold winter month, with an average temperature ranging between max 36.1°F (2.3°C) and min 25.5°F (-3.6°C). January's advent denotes a minor fluctuation in the average high-temperature to a still wintry 36.1°F (2.3°C) from December's 36°F (2.2°C). Weather in January »Weather in February
February, the last month of the winter in Pomona Heights, is also a wintry month, with temperature in the range of an average low of 28°F (-2.2°C) and an average high of 40.6°F (4.8°C). Pomona Heights's weather in February, with an average high-temperature of a still cold 40.6°F (4.8°C), subtly shifts from January's 36.1°F (2.3°C). Weather in February »Weather in March
March, the first month of the spring in Pomona Heights, is a chilly month, with an average temperature fluctuating between 48.6°F (9.2°C) and 33.4°F (0.8°C). As Pomona Heights welcomes March, the average high-temperature sees a modest rise, transitioning from an icy 40.6°F (4.8°C) in February to a chilly 48.6°F (9.2°C). Weather in March »Weather in April
April is a refreshing spring month in Pomona Heights, Washington, with an average temperature ranging between max 57.4°F (14.1°C) and min 38.7°F (3.7°C). The shift into April is marked by a modest rise in the average high-temperature, moving from March's chilly 48.6°F (9.2°C) to a moderate 57.4°F (14.1°C). Weather in April »Weather in May
May, the last month of the spring in Pomona Heights, is a refreshing month, with an average temperature ranging between min 46.2°F (7.9°C) and max 67.8°F (19.9°C). Pomona Heights's transition into May sees a rise in the average high-temperature, advancing from a mild 57.4°F (14.1°C) in April to an enjoyable 67.8°F (19.9°C). Weather in May »Weather in June
The first month of the summer, June, is a warm month in Pomona Heights, Washington, with temperature in the range of an average low of 51.3°F (10.7°C) and an average high of 74.8°F (23.8°C). The start of June brings a subtle shift in the average high-temperature, edging up from May's comfortable 67.8°F (19.9°C) to a warm 74.8°F (23.8°C). Weather in June »Weather in July
July, the same as June, is another warm summer month in Pomona Heights, Washington, with an average temperature ranging between min 57.7°F (14.3°C) and max 84.7°F (29.3°C). July witnesses an increase in the average high-temperature, moving from 74.8°F (23.8°C) in June to a still moderately hot 84.7°F (29.3°C). Weather in July »Weather in August
The last month of the summer, August, is another warm month in Pomona Heights, Washington, with an average temperature fluctuating between 85.1°F (29.5°C) and 58.8°F (14.9°C). In Pomona Heights, the highest average temperatures are observed in August, with a high of 85.1°F (29.5°C) and a low of 58.8°F (14.9°C). August's average heat index is estimated at 84.2°F (29°C). Weather in August »Weather in September
The first month of the autumn, September, is also a moderately hot month in Pomona Heights, Washington, with temperature in the range of an average low of 51.8°F (11°C) and an average high of 74.1°F (23.4°C). The average high-temperature drops in September, from August's 85.1°F (29.5°C) to a still moderately hot 74.1°F (23.4°C). Weather in September »Weather in October
October, the same as September, in Pomona Heights, Washington, is a moderate autumn month, with temperature in the range of an average high of 59.2°F (15.1°C) and an average low of 41.7°F (5.4°C). As Pomona Heights steps into October, a marked temperature drop is observed, with the average high-temperature reducing from September's warm 74.1°F (23.4°C) to a moderate 59.2°F (15.1°C). Weather in October »Weather in November
November, the last month of the autumn in Pomona Heights, is also a frosty month, with an average temperature varying between 32°F (0°C) and 45.5°F (7.5°C). The commencement of November indicates a shift in the average high-temperature, receding from October's refreshing 59.2°F (15.1°C) to a chilly 45.5°F (7.5°C). Weather in November »Weather in December
The first month of the winter, December, is still a cold month in Pomona Heights, Washington, with temperature in the range of an average high of 36°F (2.2°C) and an average low of 23.9°F (-4.5°C). Pomona Heights records the coldest temperatures in December, averaging a high of 36°F (2.2°C) and a low of 23.9°F (-4.5°C). Weather in December »Updated: Aug 7, 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
January is the most humid month, with an average relative humidity of 83%.
In Pomona Heights, Washington, during the entire year, the rain falls for 87.6 days and collects up to 5.94" (151mm) of precipitation.
Months with snowfall are January through April, September, November and December.
In Pomona Heights, during the entire year, snow falls for 19.9 days and aggregates up to 8.62" (219mm) of snow.
With an average of 5.5h of sunshine, January has the least sunshine of the year.
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
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.
In Pomona Heights, snow does not fall in May through August and October.
The month with the longest days is June, with an average of 15h and 48min of daylight.
The months with the lowest humidity are July and August, with an average relative humidity of 41%.
The month with the least rainfall is July, when the rain falls for 2.3 days and typically collects 0.08" (2mm) of precipitation.
The months with the most sunshine are July and August, with an average of 12.1h of sunshine.
The month with the highest UV index is July, with an average maximum UV index of 6.
Pomona Heights witnesses the warmest weather in August, with temperatures averaging a high of 85.1°F (29.5°C) and a low of 58.8°F (14.9°C).
December is the coldest month of the year, registering average temperatures as high as 36°F (2.2°C) and as low as 23.9°F (-4.5°C).
The month with the most rainfall is December, when the rain falls for 9.2 days and typically aggregates up to 0.87" (22mm) of precipitation.
The month with the most snowfall is December, when snow falls for 5.7 days and typically aggregates up to 3.07" (78mm) of snow.
With an average of 8h and 36min of daylight, December has the shortest days of the year in Pomona Heights.
Average temperature
Pomona Heights, WA
The warmest month (with the highest average high temperature) is August (85.1°F).
The month with the lowest average high temperature is December (36°F).
The month with the highest average low temperature is August (58.8°F).
The coldest month (with the lowest average low temperature) is December (23.9°F).
Average pressure
Pomona 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:
30.03"Hg - Average pressure in November:
30.07"Hg - Average pressure in December:
30.13"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
Pomona Heights, WA
- Average wind speed in January:
4.3mph - Average wind speed in February:
4.8mph - Average wind speed in March:
5.8mph - Average wind speed in April:
6.8mph - Average wind speed in May:
6.9mph - Average wind speed in June:
7.4mph
- Average wind speed in July:
7.1mph - Average wind speed in August:
6.8mph - Average wind speed in September:
6.1mph - Average wind speed in October:
5.2mph - Average wind speed in November:
4.9mph - Average wind speed in December:
4.2mph
The windiest month (with the highest average wind speed) is June (7.4mph).
The calmest month (with the lowest average wind speed) is December (4.2mph).
Average humidity
Pomona Heights, WA
The month with the highest relative humidity is January (83%).
The months with the lowest relative humidity are July and August (41%).
Average rainfall
Pomona Heights, WA
- Average rainfall in January:
0.83" - Average rainfall in February:
0.59" - Average rainfall in March:
0.75" - Average rainfall in April:
0.35" - Average rainfall in May:
0.67" - Average rainfall in June:
0.28"
- Average rainfall in July:
0.08" - Average rainfall in August:
0.2" - Average rainfall in September:
0.28" - Average rainfall in October:
0.55" - Average rainfall in November:
0.51" - Average rainfall in December:
0.87"
The wettest month (with the highest rainfall) is December (0.87").
The driest month (with the least rainfall) is July (0.08").
Average rainfall days
Pomona Heights, WA
- Average rainfall days in January:
10.5 days - Average rainfall days in February:
8 days - Average rainfall days in March:
10.8 days - Average rainfall days in April:
9 days - Average rainfall days in May:
7.5 days - Average rainfall days in June:
5 days
- Average rainfall days in July:
2.3 days - Average rainfall days in August:
2.6 days - Average rainfall days in September:
4.8 days - Average rainfall days in October:
8.6 days - Average rainfall days in November:
9.3 days - Average rainfall days in December:
9.2 days
The month with the highest number of rainy days is March (10.8 days).
The month with the least rainy days is July (2.3 days).
Average snowfall
Pomona Heights, WA
The month with the highest snowfall is December (3.07").
The months with the least snowfall are May, June, July, August and October (0").
Average snowfall days
Pomona Heights, WA
- Average snowfall days in January:
4.4 days - Average snowfall days in February:
4.5 days - Average snowfall days in March:
2.8 days - Average snowfall days in April:
0.3 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:
2.1 days - Average snowfall days in December:
5.7 days
The month with the highest number of snowfall days is December (5.7 days).
The months with the least snowfall days are May, June, July, August and October (0 days).
Average daylight / Average sunshine
Pomona 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 6min - 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 30min - 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 0min - Average sunshine in November:
6h and 42min - Average sunshine in December:
5h and 48min
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 30min).
Average sunshine days
Pomona Heights, WA
- Average sunshine days in January:
16.7 days - Average sunshine days in February:
15.5 days - Average sunshine days in March:
16.5 days - Average sunshine days in April:
18.5 days - Average sunshine days in May:
20.3 days - Average sunshine days in June:
23.3 days
- Average sunshine days in July:
27.6 days - Average sunshine days in August:
26.8 days - Average sunshine days in September:
23.2 days - Average sunshine days in October:
19.9 days - Average sunshine days in November:
17.3 days - Average sunshine days in December:
17.9 days
The month with the most sunshine days is July (27.6 days).
The month with the least sunshine days is February (15.5 days).
Average UV index
Pomona Heights, WA
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
Pomona 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
Pomona 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).
