Climate and monthly weather forecastGromore, WA
Climate and monthly weather forecast
Weather in January
January, like December, in Gromore, Washington, is an icy winter month, with an average temperature fluctuating between 37.6°F (3.1°C) and 26.6°F (-3°C). The introduction of January notes a subtle temperature variation to a still cold 37.6°F (3.1°C) from December's 36.9°F (2.7°C). Weather in January »Weather in February
The last month of the winter, February, is also a wintry month in Gromore, Washington, with an average temperature fluctuating between 41.5°F (5.3°C) and 28.9°F (-1.7°C). The arrival of February sees an average high-temperature of a still wintry 41.5°F (5.3°C), hardly diverging from January's 37.6°F (3.1°C). Weather in February »Weather in March
The first month of the spring, March, is a chilly month in Gromore, Washington, with an average temperature ranging between max 49.5°F (9.7°C) and min 34.7°F (1.5°C). The embrace of March brings a minor uplift in the average high-temperature, shifting from a cold 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 refreshing spring month in Gromore, Washington, with temperature in the range of an average high of 59.2°F (15.1°C) and an average low of 40.1°F (4.5°C). With the onset of April, Gromore's average high-temperature experiences a rise, moving from March's frosty 49.5°F (9.7°C) to a mild 59.2°F (15.1°C). Weather in April »Weather in May
The last month of the spring, May, is a pleasant month in Gromore, Washington, with an average temperature fluctuating between 47.5°F (8.6°C) and 69.3°F (20.7°C). May signals a shift in the average high-temperature, moving from April's moderate 59.2°F (15.1°C) to an agreeable 69.3°F (20.7°C). Weather in May »Weather in June
June, the first month of the summer in Gromore, is a moderately hot month, with an average temperature fluctuating between 76.5°F (24.7°C) and 52.3°F (11.3°C). June's arrival brings a slight change in high-temperatures, adjusting from a pleasant 69.3°F (20.7°C) in May to a warm 76.5°F (24.7°C). Weather in June »Weather in July
July is a hot summer month in Gromore, Washington, with temperature in the range of an average low of 59.2°F (15.1°C) and an average high of 86.2°F (30.1°C). With the transition into July, Gromore experiences an increase in average high-temperatures, moving up from a moderately hot 76.5°F (24.7°C) in June to a tropical 86.2°F (30.1°C). Weather in July »Weather in August
August, the last month of the summer in Gromore, is another hot month, with an average temperature fluctuating between 86.5°F (30.3°C) and 60.3°F (15.7°C). August temperatures tend to peak at an average high of 86.5°F (30.3°C) and dip to a low of 60.3°F (15.7°C). Weather in August »Weather in September
September, the first month of the autumn in Gromore, is also a moderately hot month, with an average temperature fluctuating between 53.4°F (11.9°C) and 74.8°F (23.8°C). Transition from August to September is accompanied by a temperature drop, with average high-temperatures decreasing from a hot 86.5°F (30.3°C) to a moderately hot 74.8°F (23.8°C). Weather in September »Weather in October
October, like September, is a moderate autumn month in Gromore, Washington, with an average temperature varying between 42.6°F (5.9°C) and 60.1°F (15.6°C). In Gromore, the average high-temperature in October significantly decreases from a moderately hot 74.8°F (23.8°C) in September to a moderate 60.1°F (15.6°C). Weather in October »Weather in November
November, the last month of the autumn in Gromore, is another chilly month, with an average temperature ranging between max 46.8°F (8.2°C) and min 32.7°F (0.4°C). A subtle decrease in the average high-temperature marks November, falling from October's refreshing 60.1°F (15.6°C) 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 Gromore, Washington, with an average temperature ranging between max 36.9°F (2.7°C) and min 25.5°F (-3.6°C). December is the coldest month, exhibiting average temperatures of 36.9°F (2.7°C) at the peak and 25.5°F (-3.6°C) at the base. Weather in December »Updated: Jul 28, 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 81%.
January is the month with the most rainfall. Rain falls for 10.3 days and accumulates 0.87" (22mm) of precipitation.
In Gromore, Washington, during the entire year, the rain falls for 82.2 days and collects up to 5.43" (138mm) of precipitation.
Months with snowfall are January through March, September, November and December.
Throughout the year, there are 18.5 snowfall days, and 7.8" (198mm) of snow is accumulated.
January has the least sunshine of the year, 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.
With an average of 15h and 48min of daylight, June has the longest days of the year in Gromore.
July and August, with an average relative humidity of 39%, are the least humid months.
July is the month with the least rainfall. Rain falls for 2.1 days and accumulates 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.
In Gromore, August is the month with the highest recorded average temperatures, measuring a high of 86.5°F (30.3°C) and a low of 60.3°F (15.7°C).
Gromore's coldest weather arrives in December, when temperatures average a high of 36.9°F (2.7°C) and a low of 25.5°F (-3.6°C).
December is the month with the most snowfall. Snow falls for 5.4 days and accumulates 2.76" (70mm) of snow.
The month with the shortest days is December, with an average of 8h and 36min of daylight.
Average temperature
Gromore, 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
Gromore, 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
Gromore, 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
Gromore, 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
Gromore, 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
Gromore, 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
Gromore, 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
Gromore, 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
Gromore, 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
Gromore, 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
Gromore, 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
Gromore, 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
Gromore, 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).
