Climate and monthly weather forecastZillah, WA
Climate and monthly weather forecast
Weather in January
January, like December, in Zillah, Washington, is another cold winter month, with an average temperature fluctuating between 37.2°F (2.9°C) and 27°F (-2.8°C). Zillah experiences an average high-temperature of a still icy 37.2°F (2.9°C) in January, subtly different from December's 36.7°F (2.6°C). Weather in January »Weather in February
The last month of the winter, February, is another cold month in Zillah, Washington, with temperature in the range of an average low of 29.8°F (-1.2°C) and an average high of 42.3°F (5.7°C). February's average high-temperature stands at a still wintry 42.3°F (5.7°C), showing little deviation from January's 37.2°F (2.9°C). Weather in February »Weather in March
The first month of the spring, March, is a fresh month in Zillah, Washington, with an average temperature ranging between max 50.4°F (10.2°C) and min 34.9°F (1.6°C). March's arrival brings a modest temperature shift, moving from a cold 42.3°F (5.7°C) in February to a fresh 50.4°F (10.2°C). Weather in March »Weather in April
April is a mild spring month in Zillah, Washington, with temperature in the range of an average low of 40.6°F (4.8°C) and an average high of 59.5°F (15.3°C). April's arrival coincides with a rise in the average high-temperature, moving from March's cool 50.4°F (10.2°C) to a refreshing 59.5°F (15.3°C). Weather in April »Weather in May
May, the last month of the spring in Zillah, is a pleasant month, with an average temperature varying between 69.4°F (20.8°C) and 47.8°F (8.8°C). May comes with an increase, with the average high-temperature moving from a moderate 59.5°F (15.3°C) in April to an agreeable 69.4°F (20.8°C). Weather in May »Weather in June
June, the first month of the summer in Zillah, is a warm month, with an average temperature fluctuating between 76.6°F (24.8°C) and 53.2°F (11.8°C). With the onset of June, Zillah's weather sees a minor temperature rise, transitioning from an agreeable 69.4°F (20.8°C) in May to a warm 76.6°F (24.8°C). Weather in June »Weather in July
July is a tropical summer month in Zillah, 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). Zillah's warmest weather arrives in July, when temperatures average a high of 86.5°F (30.3°C) and a low of 60.3°F (15.7°C). Weather in July »Weather in August
The last month of the summer, August, is also a hot month in Zillah, Washington, with an average temperature ranging between max 86.2°F (30.1°C) and min 60.8°F (16°C). Zillah's weather in August displays an average high-temperature of a still tropical 86.2°F (30.1°C), showing minor disparity from July's 86.5°F (30.3°C). Weather in August »Weather in September
September, the first month of the autumn in Zillah, is still a warm month, with an average temperature fluctuating between 75.6°F (24.2°C) and 54.3°F (12.4°C). The commencement of September involves a temperature shift, with the average high-temperature dropping from a tropical 86.2°F (30.1°C) in August to a moderately hot 75.6°F (24.2°C). Weather in September »Weather in October
October, the same as September, in Zillah, Washington, is another refreshing autumn month, with an average temperature varying between 43.7°F (6.5°C) and 60.1°F (15.6°C). The shift into October is characterized by a noticeable reduction in the average high-temperature, decreasing from September's warm 75.6°F (24.2°C) to a moderate 60.1°F (15.6°C). Weather in October »Weather in November
The last month of the autumn, November, is another chilly month in Zillah, Washington, with an average temperature fluctuating between 46.8°F (8.2°C) and 33.4°F (0.8°C). The average high-temperature decreases in November, shifting from a refreshing 60.1°F (15.6°C) in October to a frosty 46.8°F (8.2°C). Weather in November »Weather in December
The first month of the winter, December, is still a cold month in Zillah, Washington, with an average temperature ranging between max 36.7°F (2.6°C) and min 25.7°F (-3.5°C). December is the month that records the lowest temperatures, with averages ranging from a high of 36.7°F (2.6°C) to a low of 25.7°F (-3.5°C). Weather in December »Updated: Feb 14, 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
The most humid month is January, with an average relative humidity of 82%.
January is the month with the most rainfall in Zillah. Rain falls for 10.2 days and accumulates 1.02" (26mm) of precipitation.
In Zillah, Washington, during the entire year, the rain falls for 98.5 days and collects up to 6.97" (177mm) of precipitation.
Months with snowfall in Zillah, Washington, are January through March, September, November and December.
In Zillah, Washington, during the entire year, snow falls for 17.1 days and aggregates up to 6.69" (170mm) of snow.
January has the least sunshine of the year, with an average of 5.5h of sunshine.
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
February is the month with the most snowfall in Zillah. Snow falls for 4.7 days and accumulates 2.4" (61mm) of snow.
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 Zillah, Washington.
With an average of 15h and 42min of daylight, June has the longest days of the year in Zillah.
Zillah's temperatures tend to reach their peak averages in July, with a high of 86.5°F (30.3°C) and a low of 60.3°F (15.7°C).
With an average relative humidity of 38%, July is the least humid month in Zillah, Washington.
July is the month with the least rainfall in Zillah, Washington. Rain falls for 3.5 days and accumulates 0.16" (4mm) of precipitation.
July and August, with an average of 12.1h of sunshine, are months with the most sunshine in Zillah, Washington.
The month with the highest UV index is July, with an average maximum UV index of 7.
December is the coldest month, with an average high-temperature of 36.7°F (2.6°C) and an average low-temperature of 25.7°F (-3.5°C).
With an average of 8h and 42min of daylight, December has the shortest days of the year in Zillah, Washington.
Average temperature
Zillah, WA
The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is December (36.7°F).
The month with the highest average low temperature is August (60.8°F).
The coldest month (with the lowest average low temperature) is December (25.7°F).
Average pressure
Zillah, 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:
29.96"Hg - Average pressure in June:
29.95"Hg
- Average pressure in July:
29.95"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:
30.08"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
Zillah, WA
- Average wind speed in January:
4.8mph - Average wind speed in February:
5.5mph - Average wind speed in March:
6.6mph - Average wind speed in April:
7.5mph - Average wind speed in May:
7mph - Average wind speed in June:
7.3mph
- Average wind speed in July:
6.5mph - Average wind speed in August:
6.3mph - Average wind speed in September:
6.3mph - Average wind speed in October:
5.7mph - Average wind speed in November:
5.5mph - Average wind speed in December:
4.7mph
The windiest month (with the highest average wind speed) is April (7.5mph).
The calmest month (with the lowest average wind speed) is December (4.7mph).
Average humidity
Zillah, WA
The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is July (38%).
Average rainfall
Zillah, WA
- Average rainfall in January:
1.02" - Average rainfall in February:
0.75" - Average rainfall in March:
0.71" - Average rainfall in April:
0.39" - Average rainfall in May:
0.94" - Average rainfall in June:
0.43"
- Average rainfall in July:
0.16" - Average rainfall in August:
0.28" - Average rainfall in September:
0.31" - Average rainfall in October:
0.63" - Average rainfall in November:
0.47" - Average rainfall in December:
0.87"
The wettest month (with the highest rainfall) is January (1.02").
The driest month (with the least rainfall) is July (0.16").
Average rainfall days
Zillah, WA
- Average rainfall days in January:
10.2 days - Average rainfall days in February:
8.3 days - Average rainfall days in March:
12.1 days - Average rainfall days in April:
10.8 days - Average rainfall days in May:
8.9 days - Average rainfall days in June:
6.3 days
- Average rainfall days in July:
3.5 days - Average rainfall days in August:
4.2 days - Average rainfall days in September:
4.9 days - Average rainfall days in October:
9.2 days - Average rainfall days in November:
9.6 days - Average rainfall days in December:
10.5 days
The month with the highest number of rainy days is March (12.1 days).
The month with the least rainy days is July (3.5 days).
Average snowfall
Zillah, WA
The month with the highest snowfall is February (2.4").
The months with the least snowfall are April, May, June, July, August and October (0").
Average snowfall days
Zillah, WA
- Average snowfall days in January:
4.2 days - Average snowfall days in February:
4.7 days - Average snowfall days in March:
1.4 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:
0.1 days - Average snowfall days in October:
0 days - Average snowfall days in November:
1.7 days - Average snowfall days in December:
5 days
The month with the highest number of snowfall days is December (5 days).
The months with the least snowfall days are April, May, June, July, August and October (0 days).
Average daylight / Average sunshine
Zillah, 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 42min
- 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 42min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in January:
5h and 30min - Average sunshine in February:
6h and 0min - Average sunshine in March:
8h and 12min - Average sunshine in April:
10h and 36min - Average sunshine in May:
11h and 18min - Average sunshine in June:
11h and 48min
- 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:
6h and 54min - Average sunshine in November:
6h and 36min - Average sunshine in December:
5h and 42min
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
Zillah, WA
- Average sunshine days in January:
16.8 days - Average sunshine days in February:
14.6 days - Average sunshine days in March:
15.3 days - Average sunshine days in April:
16 days - Average sunshine days in May:
19.7 days - Average sunshine days in June:
21.7 days
- Average sunshine days in July:
25.8 days - Average sunshine days in August:
24.2 days - Average sunshine days in September:
22.4 days - Average sunshine days in October:
19.6 days - Average sunshine days in November:
16.5 days - Average sunshine days in December:
16.1 days
The month with the most sunshine days is July (25.8 days).
The month with the least sunshine days is February (14.6 days).
Average UV index
Zillah, 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
Zillah, WA
The month with the most cloud cover is January (Cloud cover 42).
The month with the least cloud cover is July (Cloud cover 9).
Average visibility
Zillah, 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).
