Climate and monthly weather forecastPiedmont, WA
Climate and monthly weather forecast
Weather in January
January, like December, in Piedmont, Washington, is an icy winter month, with an average temperature varying between 41.4°F (5.2°C) and 32.9°F (0.5°C). With the advent of January, Piedmont's high-temperatures adjust to a still cold 41.4°F (5.2°C), closely aligning with the preceding month. Weather in January »Weather in February
The last month of the winter, February, is also a wintry month in Piedmont, Washington, with an average temperature ranging between min 31.5°F (-0.3°C) and max 40.6°F (4.8°C). At the onset of February, Piedmont records an average high-temperature of a still wintry 40.6°F (4.8°C), showing little deviation from the preceding month. Weather in February »Weather in March
The first month of the spring, March, is a frosty month in Piedmont, Washington, with an average temperature varying between 32.4°F (0.2°C) and 43.3°F (6.3°C). As Piedmont welcomes March, the average high-temperature records at a chilly 43.3°F (6.3°C), marking an insignificant deviation from the prior month. Weather in March »Weather in April
April, like March, is a frosty spring month in Piedmont, Washington, with an average temperature varying between 35.6°F (2°C) and 48.2°F (9°C). With the start of April, Piedmont measures an average high-temperature of a still chilly 48.2°F (9°C), not significantly differing from March's 43.3°F (6.3°C). Weather in April »Weather in May
May, the last month of the spring in Piedmont, is a moderate month, with temperature in the range of an average low of 40.5°F (4.7°C) and an average high of 56.8°F (13.8°C). The shift into May is marked by a modest rise in the average high-temperature, moving from April's chilly 48.2°F (9°C) to a mild 56.8°F (13.8°C). Weather in May »Weather in June
June, the first month of the summer in Piedmont, is a comfortable month, with an average temperature fluctuating between 61°F (16.1°C) and 43.3°F (6.3°C). Piedmont experiences a minor change to a comfortable 61°F (16.1°C) in average high-temperature during June, closely reflecting May. Weather in June »Weather in July
July, the same as June, is another enjoyable summer month in Piedmont, Washington, with an average temperature fluctuating between 67.6°F (19.8°C) and 47.3°F (8.5°C). The start of July signals a slight increase in the average high-temperature, moving from 61°F (16.1°C) in June to a still enjoyable 67.6°F (19.8°C). Weather in July »Weather in August
August, the last month of the summer in Piedmont, is a pleasant month, with temperature in the range of an average low of 48.6°F (9.2°C) and an average high of 69.1°F (20.6°C). In Piedmont, the peak average temperatures are observed in August, with a high of 69.1°F (20.6°C) and a low of 48.6°F (9.2°C). Weather in August »Weather in September
September, the first month of the autumn in Piedmont, is still a comfortable month, with an average temperature fluctuating between 62.6°F (17°C) and 45.5°F (7.5°C). September brings a minor shift in the average high-temperature, adjusting from a pleasant 69.1°F (20.6°C) in August to a comfortable 62.6°F (17°C). Weather in September »Weather in October
October, like September, in Piedmont, Washington, is a cool autumn month, with an average temperature fluctuating between 53.1°F (11.7°C) and 41.5°F (5.3°C). October's arrival coincides with a drop in the average high-temperature, decreasing from September's refreshing 62.6°F (17°C) to a cool 53.1°F (11.7°C). Weather in October »Weather in November
The last month of the autumn, November, is also a frosty month in Piedmont, Washington, with an average temperature fluctuating between 36.5°F (2.5°C) and 44.6°F (7°C). November reveals a small adjustment in temperature, transitioning from an average high of a cool 53.1°F (11.7°C) in October to a frosty 44.6°F (7°C). Weather in November »Weather in December
The first month of the winter, December, is also an icy month in Piedmont, Washington, with temperature in the range of an average high of 39.4°F (4.1°C) and an average low of 31.5°F (-0.3°C). December, recording an average high temperature of 39.4°F (4.1°C) and a low temperature of 31.5°F (-0.3°C), is Piedmont's 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
The months with the highest humidity in Piedmont are January and December, with an average relative humidity of 89%.
January is the month with the most rainfall. Rain falls for 14.8 days and accumulates 3.35" (85mm) of precipitation.
In Piedmont, during the entire year, the rain falls for 150.3 days and collects up to 17.36" (441mm) of precipitation.
January through April, November and December are months with snowfall.
In Piedmont, during the entire year, snow falls for 20 days and aggregates up to 11.06" (281mm) of snow.
With an average of 3.7h of sunshine, January has the least sunshine of the year.
January through March, 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 Piedmont. Snow falls for 7.2 days and accumulates 4.53" (115mm) 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.
May through October are months without snowfall.
The month with the longest days is June, with an average of 16h and 0min of daylight.
June through August, with an average maximum UV index of 4, are months with the highest UV index.
The months with the lowest humidity are July and August, with an average relative humidity of 76%.
July and August are months with the least rain in Piedmont when the rain falls for 7.3 days and typically aggregates up to 0.43" (11mm) of rain.
The months with the most sunshine are July and August, with an average of 10.4h of sunshine.
August, with its high-temperature average of 69.1°F (20.6°C) and a low-temperature average of 48.6°F (9.2°C), is the warmest month.
With average high and low temperatures of 39.4°F (4.1°C) and 31.5°F (-0.3°C) respectively, December is Piedmont's coldest month.
December has the shortest days of the year, with an average of 8h and 24min of daylight.
Average temperature
Piedmont, WA
The warmest month (with the highest average high temperature) is August (69.1°F).
The month with the lowest average high temperature is December (39.4°F).
The month with the highest average low temperature is August (48.6°F).
The coldest months (with the lowest average low temperature) are February and December (31.5°F).
Average pressure
Piedmont, WA
- Average pressure in January:
30.05"Hg - Average pressure in February:
30.03"Hg - Average pressure in March:
29.99"Hg - Average pressure in April:
30.05"Hg - Average pressure in May:
30.04"Hg - Average pressure in June:
30.05"Hg
- Average pressure in July:
30.07"Hg - Average pressure in August:
30.03"Hg - Average pressure in September:
30.02"Hg - Average pressure in October:
30.03"Hg - Average pressure in November:
30.01"Hg - Average pressure in December:
30.04"Hg
The month with the highest atmospheric pressure is July (30.07"Hg).
The month with the lowest atmospheric pressure is March (29.99"Hg).
Average wind speed
Piedmont, WA
- Average wind speed in January:
5.2mph - Average wind speed in February:
5mph - Average wind speed in March:
4.9mph - Average wind speed in April:
4.6mph - Average wind speed in May:
4.1mph - Average wind speed in June:
4.3mph
- Average wind speed in July:
4mph - Average wind speed in August:
3.5mph - Average wind speed in September:
3.5mph - Average wind speed in October:
4.2mph - Average wind speed in November:
5.2mph - Average wind speed in December:
4.8mph
The windiest months (with the highest average wind speed) are January and November (5.2mph).
The calmest months (with the lowest average wind speed) are August and September (3.5mph).
Average humidity
Piedmont, WA
The months with the highest relative humidity are January and December (89%).
The months with the lowest relative humidity are July and August (76%).
Average rainfall
Piedmont, WA
- Average rainfall in January:
3.35" - Average rainfall in February:
1.85" - Average rainfall in March:
1.34" - Average rainfall in April:
1.1" - Average rainfall in May:
1.26" - Average rainfall in June:
0.94"
- Average rainfall in July:
0.43" - Average rainfall in August:
0.43" - Average rainfall in September:
0.75" - Average rainfall in October:
1.5" - Average rainfall in November:
1.89" - Average rainfall in December:
2.52"
The wettest month (with the highest rainfall) is January (3.35").
The driest months (with the least rainfall) are July and August (0.43").
Average rainfall days
Piedmont, WA
- Average rainfall days in January:
14.8 days - Average rainfall days in February:
12.8 days - Average rainfall days in March:
16.1 days - Average rainfall days in April:
15.8 days - Average rainfall days in May:
13.5 days - Average rainfall days in June:
12.1 days
- Average rainfall days in July:
7.3 days - Average rainfall days in August:
5.4 days - Average rainfall days in September:
10.2 days - Average rainfall days in October:
13.2 days - Average rainfall days in November:
13.8 days - Average rainfall days in December:
15.3 days
The month with the highest number of rainy days is March (16.1 days).
The month with the least rainy days is August (5.4 days).
Average snowfall
Piedmont, WA
The month with the highest snowfall is February (4.53").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Piedmont, WA
- Average snowfall days in January:
2.8 days - Average snowfall days in February:
7.2 days - Average snowfall days in March:
4.3 days - Average snowfall days in April:
0.6 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:
1.5 days - Average snowfall days in December:
3.6 days
The month with the highest number of snowfall days is February (7.2 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Piedmont, WA
- Average daylight in January:
8h and 54min - Average daylight in February:
10h and 18min - Average daylight in March:
11h and 54min - Average daylight in April:
13h and 42min - Average daylight in May:
15h and 12min - Average daylight in June:
16h and 0min
- Average daylight in July:
15h and 36min - Average daylight in August:
14h and 12min - Average daylight in September:
12h and 36min - Average daylight in October:
10h and 48min - Average daylight in November:
9h and 18min - Average daylight in December:
8h and 24min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in January:
3h and 42min - Average sunshine in February:
3h and 48min - Average sunshine in March:
5h and 18min - Average sunshine in April:
7h and 6min - Average sunshine in May:
8h and 36min - Average sunshine in June:
9h and 6min
- Average sunshine in July:
10h and 24min - Average sunshine in August:
10h and 24min - Average sunshine in September:
8h and 36min - Average sunshine in October:
5h and 6min - Average sunshine in November:
4h and 30min - Average sunshine in December:
4h and 6min
The months with the most sunshine are July and August (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days
Piedmont, WA
- Average sunshine days in January:
13.3 days - Average sunshine days in February:
9.6 days - Average sunshine days in March:
10 days - Average sunshine days in April:
10.6 days - Average sunshine days in May:
14 days - Average sunshine days in June:
12.8 days
- Average sunshine days in July:
21 days - Average sunshine days in August:
22.5 days - Average sunshine days in September:
16.8 days - Average sunshine days in October:
15.2 days - Average sunshine days in November:
12.4 days - Average sunshine days in December:
12.8 days
The month with the most sunshine days is August (22.5 days).
The month with the least sunshine days is February (9.6 days).
Average UV index
Piedmont, WA
The months with the highest UV index are June, July and August (UV index 4).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover
Piedmont, WA
The month with the most cloud cover is February (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility
Piedmont, WA
The months with the highest visibility are April, May, June, July, August, September, October and November (5mi).
The months with the lowest visibility are January, February, March and December (4mi).
