Climate and monthly weather forecastIlwaco, WA
Climate and monthly weather forecast
Weather in January
January, like December, is a frosty winter month in Ilwaco, Washington, with an average temperature ranging between min 42.1°F (5.6°C) and max 47.7°F (8.7°C). Ilwaco experiences a recorded average high-temperature of a still frosty 47.7°F (8.7°C) in January, closely aligned with December's 46.8°F (8.2°C). Weather in January »Weather in February
February, the last month of the winter in Ilwaco, is also a frosty month, with temperature in the range of an average high of 47.5°F (8.6°C) and an average low of 41.9°F (5.5°C). In February, the average high-temperature registers at a still chilly 47.5°F (8.6°C), nearly identical to January's 47.7°F (8.7°C). Weather in February »Weather in March
March, the first month of the spring in Ilwaco, is still a chilly month, with an average temperature ranging between max 49.5°F (9.7°C) and min 42.6°F (5.9°C). In March, Ilwaco experiences a minor shift in meteorological conditions with average high-temperatures marked at a still chilly 49.5°F (9.7°C), closely mirroring the climate in February. Weather in March »Weather in April
April in Ilwaco, Washington, is a cool spring month, with an average temperature ranging between min 45.1°F (7.3°C) and max 51.8°F (11°C). Ilwaco's shift into April is marked by a subtle change to a cool 51.8°F (11°C) from March's 49.5°F (9.7°C) in temperature. Weather in April »Weather in May
The last month of the spring, May, is a moderate month in Ilwaco, Washington, with an average temperature varying between 55.9°F (13.3°C) and 48.7°F (9.3°C). Ilwaco's May reports an average high-temperature of a mild 55.9°F (13.3°C), exhibiting a minor difference from April. Weather in May »Weather in June
June, the first month of the summer in Ilwaco, is still a mild month, with an average temperature fluctuating between 52.3°F (11.3°C) and 59.5°F (15.3°C). The transition from May to June sees average high-temperatures adjusting to a still moderate 59.5°F (15.3°C), from a not significantly different 55.9°F (13.3°C). Weather in June »Weather in July
July in Ilwaco, Washington, is a comfortable summer month, with an average temperature fluctuating between 54.7°F (12.6°C) and 63.1°F (17.3°C). The advent of July brings an average high-temperature of a still refreshing 63.1°F (17.3°C), almost identical to the preceding month. Weather in July »Weather in August
August, the last month of the summer in Ilwaco, is another refreshing month, with an average temperature varying between 63.9°F (17.7°C) and 55.9°F (13.3°C). The temperatures reach their highest averages in August, with highs of 63.9°F (17.7°C) and lows of 55.9°F (13.3°C). Weather in August »Weather in September
September, the first month of the autumn in Ilwaco, is also an enjoyable month, with an average temperature fluctuating between 55°F (12.8°C) and 62.6°F (17°C). Upon the beginning of September, Ilwaco's high-temperatures register at a still refreshing 62.6°F (17°C), closely mirroring the preceding month. Weather in September »Weather in October
October, the same as September, in Ilwaco, Washington, is a moderate autumn month, with temperature in the range of an average low of 50.9°F (10.5°C) and an average high of 57.9°F (14.4°C). Ilwaco's weather in October indicates an average high-temperature of a moderate 57.9°F (14.4°C), nearly consistent with the 62.6°F (17°C) of September. Weather in October »Weather in November
November, the last month of the autumn in Ilwaco, is another cool month, with an average temperature fluctuating between 51.6°F (10.9°C) and 45.9°F (7.7°C). November's onset corresponds with a subtle shift in the average high-temperature, slightly moving from a moderate 57.9°F (14.4°C) in October to a fresh 51.6°F (10.9°C). Weather in November »Weather in December
The first month of the winter, December, is still a chilly month in Ilwaco, Washington, with temperature in the range of an average low of 41.5°F (5.3°C) and an average high of 46.8°F (8.2°C). December is the month when Ilwaco experiences its coldest temperatures, averaging a high of 46.8°F (8.2°C) and a low of 41.5°F (5.3°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
In Ilwaco, Washington, during the entire year, the rain falls for 165.1 days and collects up to 19.92" (506mm) of precipitation.
January, February and September are months with snowfall.
Throughout the year, there are 1.8 snowfall days, and 0.47" (12mm) of snow is accumulated.
January has the least sunshine of the year, with an average of 3.8h of sunshine.
February is the month with the most snowfall in Ilwaco, Washington. Snow falls for 0.8 days and accumulates 0.31" (8mm) of snow.
The months with the lowest UV index are February, November and December, with an average maximum UV index of 2.
March through August, October through December are months without snowfall in Ilwaco, Washington.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Ilwaco, Washington, 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 is the least humid month, with an average relative humidity of 80%.
May through September, with an average maximum UV index of 4, are months with the highest UV index.
With an average of 15h and 42min of daylight, June has the longest days of the year.
The month with the least rainfall is July, when the rain falls for 7.8 days and typically collects 0.35" (9mm) of precipitation.
With an average of 9.7h of sunshine, July has the most sunshine of the year.
Ilwaco experiences its average highest temperatures in August, reaching a peak of 63.9°F (17.7°C) and a minimum of 55.9°F (13.3°C).
With an average relative humidity of 86%, August is the most humid month.
December, with an average high of 46.8°F (8.2°C) and a low of 41.5°F (5.3°C), signifies the coldest month of the year in Ilwaco.
December is the month with the most rainfall in Ilwaco. Rain falls for 17.9 days and accumulates 3.31" (84mm) of precipitation.
With an average of 8h and 42min of daylight, December has the shortest days of the year in Ilwaco, Washington.
Average temperature
Ilwaco, WA
The warmest month (with the highest average high temperature) is August (63.9°F).
The month with the lowest average high temperature is December (46.8°F).
The month with the highest average low temperature is August (55.9°F).
The coldest month (with the lowest average low temperature) is December (41.5°F).
Average pressure
Ilwaco, WA
- Average pressure in January:
30.07"Hg - Average pressure in February:
30.05"Hg - Average pressure in March:
30.01"Hg - Average pressure in April:
30.07"Hg - Average pressure in May:
30.06"Hg - Average pressure in June:
30.07"Hg
- Average pressure in July:
30.08"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:
30.03"Hg - Average pressure in December:
30.06"Hg
The month with the highest atmospheric pressure is July (30.08"Hg).
The month with the lowest atmospheric pressure is March (30.01"Hg).
Average wind speed
Ilwaco, WA
- Average wind speed in January:
11.9mph - Average wind speed in February:
10.6mph - Average wind speed in March:
10.8mph - Average wind speed in April:
9.8mph - Average wind speed in May:
8.5mph - Average wind speed in June:
8.1mph
- Average wind speed in July:
7.8mph - Average wind speed in August:
7.1mph - Average wind speed in September:
7.8mph - Average wind speed in October:
9.5mph - Average wind speed in November:
11.4mph - Average wind speed in December:
11.3mph
The windiest month (with the highest average wind speed) is January (11.9mph).
The calmest month (with the lowest average wind speed) is August (7.1mph).
Average humidity
Ilwaco, WA
The month with the highest relative humidity is August (86%).
The month with the lowest relative humidity is April (80%).
Average rainfall
Ilwaco, WA
- Average rainfall in January:
2.8" - Average rainfall in February:
2.01" - Average rainfall in March:
1.89" - Average rainfall in April:
1.42" - Average rainfall in May:
0.79" - Average rainfall in June:
0.83"
- Average rainfall in July:
0.35" - Average rainfall in August:
0.47" - Average rainfall in September:
0.94" - Average rainfall in October:
1.97" - Average rainfall in November:
3.15" - Average rainfall in December:
3.31"
The wettest month (with the highest rainfall) is December (3.31").
The driest month (with the least rainfall) is July (0.35").
Average rainfall days
Ilwaco, WA
- Average rainfall days in January:
16.8 days - Average rainfall days in February:
17.1 days - Average rainfall days in March:
17.8 days - Average rainfall days in April:
16.1 days - Average rainfall days in May:
11.1 days - Average rainfall days in June:
10.1 days
- Average rainfall days in July:
7.8 days - Average rainfall days in August:
6.7 days - Average rainfall days in September:
9.9 days - Average rainfall days in October:
15.3 days - Average rainfall days in November:
18.5 days - Average rainfall days in December:
17.9 days
The month with the highest number of rainy days is November (18.5 days).
The month with the least rainy days is August (6.7 days).
Average snowfall
Ilwaco, WA
The month with the highest snowfall is February (0.31").
The months with the least snowfall are March, April, May, June, July, August, October, November and December (0").
Average snowfall days
Ilwaco, WA
- Average snowfall days in January:
0.4 days - Average snowfall days in February:
0.8 days - Average snowfall days in March:
0.1 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:
0.1 days - Average snowfall days in December:
0.3 days
The month with the highest number of snowfall days is February (0.8 days).
The months with the least snowfall days are April, May, June, July, August and October (0 days).
Average daylight / Average sunshine
Ilwaco, 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:
3h and 48min - Average sunshine in February:
3h and 54min - Average sunshine in March:
5h and 42min - Average sunshine in April:
7h and 24min - Average sunshine in May:
8h and 12min - Average sunshine in June:
8h and 48min
- Average sunshine in July:
9h and 42min - Average sunshine in August:
9h and 36min - Average sunshine in September:
8h and 42min - Average sunshine in October:
5h and 12min - Average sunshine in November:
4h and 24min - Average sunshine in December:
4h and 6min
The month with the most sunshine is July (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days
Ilwaco, WA
- Average sunshine days in January:
12.4 days - Average sunshine days in February:
9.1 days - Average sunshine days in March:
10.5 days - Average sunshine days in April:
10.9 days - Average sunshine days in May:
16.7 days - Average sunshine days in June:
16.3 days
- Average sunshine days in July:
19 days - Average sunshine days in August:
20.3 days - Average sunshine days in September:
17.1 days - Average sunshine days in October:
14 days - Average sunshine days in November:
8.9 days - Average sunshine days in December:
11.1 days
The month with the most sunshine days is August (20.3 days).
The month with the least sunshine days is November (8.9 days).
Average UV index
Ilwaco, WA
The months with the highest UV index are May, June, July, August and September (UV index 4).
The months with the lowest UV index are February, November and December (UV index 2).
Average cloud cover
Ilwaco, WA
The month with the most cloud cover is January (Cloud cover 60).
The months with the least cloud cover are August and September (Cloud cover 37).
Average visibility
Ilwaco, WA
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
