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Climate - Longview (Washington_state)


Average weather, temperature, rainfall, sunshine hours

Flag - United States

Longview, where it's located


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Climate chart - Longview (Washington_state)
Climate chart - Longview (Washington_state)

The climate of Longview is sub-oceanic, with quite cold, rainy winters and mild to pleasantly warm, fairly sunny summers.
The city is located in the southwest of Washington state, on the plain, 75 km (45 mi) away from the Pacific Ocean. Beyond the Columbia River lies the state of Oregon, while a tributary of the Columbia River, the Cowlitz, divides Longview from the town of Kelso. Mount St. Helens is just 55 km (35 mi) to the east.
The city is surrounded by hills, so it has a cooler microclimate than other cities in the area: for example, it is about 1.5 °C cooler than Portland, and is similar to Centralia, which is 65 km (40 mi) further to the north.
Fog can form at night, especially from October to March.
Although the winter is not very cold, every winter there can be a cold period, with night lows dropping to -7/-8 °C (18/19 °F). Moreover, there can sometimes be cold waves, sometimes even in November, with temperatures going down to -10 °C (14 °F) or even below. The temperature dropped to -16.5 °C (2 °F) in February 1950, and to -14 °C (7 °F) in December 2009.
Snow is rare, but given the high precipitation level, a heavy snowfall can occasionally occur. On average, 13 cm (5 inches) of snow fall per year.
In summer, nights are cool, and sometimes even a little cold, while the days are generally pleasant. However, it can sometimes get hot, and on the hottest days of the year, the temperature can reach 35/36 °C (95/97 °F). During the exceptional heat wave of late June 2021, it reached 43.3 (110 °F).
The average temperature of the coldest month (December) is of 4.8 °C (40.7 °F), that of the warmest month (August) is of 19.4 °C (66.9 °F). Here are the average temperatures.
Longview - Average temperatures (1991-2020)
MonthMin (°C)Max (°C)Mean (°C)Min (°F)Max (°F)Mean (°F)
January1.78.75.2354841.4
February1.511.16.3355243.3
March3.113.88.4385747.2
April4.716.710.7406251.3
May7.420.413.9456957
June9.722.716.2497361.2
July11.926.319.1537966.4
August11.826.919.4538066.8
September9.824.317507662.7
October6.717.812.2446454
November3.711.77.7395345.8
December1.68.14.8354740.7
Year6.217.411.7543.163.353

Precipitation amounts to 1,220 millimeters (48.1 inches) per year: it is therefore quite abundant. It ranges from 15 mm (0.6 in) in the driest month (July) to 185 mm (7.3 in) in the wettest (November). Here is the average precipitation.
Longview - Average precipitation
MonthMillimetersInchesDays
January1656.524
February1204.720
March1254.921
April1054.119
May803.114
June50211
July150.65
August2515
September602.49
October1104.317
November1857.323
December1807.124
Year122048192

Longview

Best Time


The best time to visit Longview is summer, especially in July and August, since it is the mildest, driest and sunniest period of the year. May, June and September are also acceptable months.

Back to the climate of Washington state.


Longview - Weather by month

Based on the period 1991-2020
(January - February - March - April - May - June - July - August - September - October - November - December)


January is generally a quite cold month. The average temperature is of 5.2 °C (41 °F), with a minimum of 1.7 °C (35.1 °F) and a maximum of 8.7 °C (47.7 °F).
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around -5 °C (23 °F). However, it dropped to -11.7 °C (10.9 °F) in January 2017.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 13.5 °C (56.5 °F). However, it reached 17.2 °C (63 °F) in January 2018.
Rain iconPrecipitation amounts to 165 mm (6.5 in), distributed over 24 days.
The day lasts on average 9 hours and 5 minutes.
The average humidity is 84%. Hence, the air is normally humid.
The average wind speed is 10 kph (6 mph).



February is generally a quite cold month. The average temperature is of 6.3 °C (43 °F), with a minimum of 1.5 °C (34.7 °F) and a maximum of 11.1 °C (52 °F).
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around -5 °C (23 °F). However, it dropped to -10 °C (14 °F) in February 1996.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 16 °C (61 °F). However, it reached 21 °C (69.8 °F) in February 2005.
Rain iconPrecipitation amounts to 120 mm (4.7 in), distributed over 20 days.
The day lasts on average 10 hours and 25 minutes.
The average humidity is 79%. Hence, the air is normally humid.
The average wind speed is 8 kph (5 mph).



March is generally a quite mild month. The average temperature is of 8.4 °C (47 °F), with a minimum of 3.1 °C (37.5 °F) and a maximum of 13.8 °C (56.9 °F).
Cold thermometer iconOn the coldest nights, which normally occur at the beginning of the month, the temperature usually drops to around -2.5 °C (27.5 °F). However, it dropped to -7.8 °C (18 °F) in March 2019.
Warm thermometer iconOn the warmest days, which normally occur at the end of the month, the temperature usually reaches around 20.5 °C (68.5 °F). However, it reached 26.6 °C (79.9 °F) in March 1994.
Rain iconPrecipitation amounts to 125 mm (4.9 in), distributed over 21 days.
The day lasts on average 12 hours and 0 minutes.
The average humidity is 75%. Hence, the air is normally humid.
The average wind speed is 8 kph (5 mph).



April is generally a mild month. The average temperature is of 10.7 °C (51 °F), with a minimum of 4.7 °C (40.4 °F) and a maximum of 16.7 °C (62.1 °F).
Cold thermometer iconOn the coldest nights, which normally occur at the beginning of the month, the temperature usually drops to around 0 °C (32 °F). However, it dropped to -3 °C (26.6 °F) in April 2007.
Warm thermometer iconOn the warmest days, which normally occur at the end of the month, the temperature usually reaches around 25.5 °C (77.5 °F). However, it reached 32 °C (89.6 °F) in April 2014.
Rain iconPrecipitation amounts to 105 mm (4.1 in), distributed over 19 days.
The day lasts on average 13 hours and 35 minutes.
The average humidity is 72%. Hence, the air is normally humid.
The average wind speed is 8 kph (5 mph).



May is generally a mild month. The average temperature is of 13.9 °C (57 °F), with a minimum of 7.4 °C (45.3 °F) and a maximum of 20.4 °C (68.8 °F).
Cold thermometer iconOn the coldest nights, which normally occur at the beginning of the month, the temperature usually drops to around 2.5 °C (36.5 °F). However, it dropped to 0 °C (32 °F) in May 2002.
Warm thermometer iconOn the warmest days, which normally occur at the end of the month, the temperature usually reaches around 29 °C (84.5 °F). However, it reached 34 °C (93.2 °F) in May 2001.
Rain iconPrecipitation amounts to 80 mm (3.1 in), distributed over 14 days.
The day lasts on average 15 hours and 0 minutes. So the days are long.
The average humidity is 69%.
The average wind speed is 8 kph (5 mph).



June is generally a very mild month. The average temperature is of 16.2 °C (61 °F), with a minimum of 9.7 °C (49.5 °F) and a maximum of 22.7 °C (72.9 °F).
Cold thermometer iconOn the coldest nights, which normally occur at the beginning of the month, the temperature usually drops to around 5.5 °C (42.5 °F). However, it dropped to 3 °C (37.4 °F) in June 1999.
Warm thermometer iconOn the warmest days, which normally occur at the end of the month, the temperature usually reaches around 31 °C (88 °F). However, it reached 36.1 °C (97 °F) in June 2019.
Rain iconPrecipitation amounts to 50 mm (2 in), distributed over 11 days.
The day lasts on average 15 hours and 40 minutes. So the days are long. June 21, the summer solstice, is the longest day of the year in the Northern Hemisphere.
The average humidity is 69%.
The average wind speed is 8 kph (5 mph).



July is generally a warm month. However, there are remarkable differences between night and day. The average temperature is of 19.1 °C (66 °F), with a minimum of 11.9 °C (53.4 °F) and a maximum of 26.3 °C (79.3 °F).
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 8 °C (46.5 °F). However, it dropped to 6 °C (42.8 °F) in July 1999.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 34 °C (93.5 °F). However, it reached 41 °C (105.8 °F) in July 2009.
Rain iconPrecipitation amounts to 15 mm (0.6 in), distributed over 5 days.
The day lasts on average 15 hours and 20 minutes. So the days are long.
The average humidity is 66%.
The average wind speed is 9 kph (5 mph).



August, the warmest month of the year, is generally a warm month. However, there are remarkable differences between night and day. The average temperature is of 19.4 °C (67 °F), with a minimum of 11.8 °C (53.3 °F) and a maximum of 26.9 °C (80.4 °F).
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 8 °C (46.5 °F). However, it dropped to 5 °C (41 °F) in August 2008.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 34 °C (93 °F). However, it reached 39 °C (102.2 °F) in August 2014.
Rain iconPrecipitation amounts to 25 mm (1 in), distributed over 5 days.
The day lasts on average 14 hours and 0 minutes.
The average humidity is 68%.
The average wind speed is 8 kph (5 mph).



September is generally a very mild month. However, there are remarkable differences between night and day. The average temperature is of 17.0 °C (63 °F), with a minimum of 9.8 °C (49.6 °F) and a maximum of 24.3 °C (75.7 °F).
Cold thermometer iconOn the coldest nights, which normally occur at the end of the month, the temperature usually drops to around 5 °C (41 °F). However, it dropped to 1 °C (33.8 °F) in September 1999.
Warm thermometer iconOn the warmest days, which normally occur at the beginning of the month, the temperature usually reaches around 31 °C (88 °F). However, it reached 35.6 °C (96.1 °F) in September 2017.
Rain iconPrecipitation amounts to 60 mm (2.4 in), distributed over 9 days.
The day lasts on average 12 hours and 30 minutes.
The average humidity is 71%. Hence, the air is normally humid.
The average wind speed is 7 kph (4 mph).



October is generally a mild month. The average temperature is of 12.2 °C (54 °F), with a minimum of 6.7 °C (44.1 °F) and a maximum of 17.8 °C (64 °F).
Cold thermometer iconOn the coldest nights, which normally occur at the end of the month, the temperature usually drops to around 0.5 °C (32.5 °F). However, it dropped to -5 °C (23 °F) in October 2006.
Warm thermometer iconOn the warmest days, which normally occur at the beginning of the month, the temperature usually reaches around 24 °C (75.5 °F). However, it reached 28.3 °C (82.9 °F) in October 1993.
Rain iconPrecipitation amounts to 110 mm (4.3 in), distributed over 17 days.
The day lasts on average 10 hours and 50 minutes.
The average humidity is 79%. Hence, the air is normally humid.
The average wind speed is 7 kph (4 mph).



November is generally a quite mild month. The average temperature is of 7.7 °C (46 °F), with a minimum of 3.7 °C (38.6 °F) and a maximum of 11.7 °C (53 °F).
Cold thermometer iconOn the coldest nights, which normally occur at the end of the month, the temperature usually drops to around -3.5 °C (26 °F). However, it dropped to -11 °C (12.2 °F) in November 2010.
Warm thermometer iconOn the warmest days, which normally occur at the beginning of the month, the temperature usually reaches around 17.5 °C (64 °F). However, it reached 24 °C (75.2 °F) in November 2010.
Rain iconPrecipitation amounts to 185 mm (7.3 in), distributed over 23 days.
The day lasts on average 9 hours and 25 minutes.
The average humidity is 83%. Hence, the air is normally humid.
The average wind speed is 9 kph (5 mph).



December, the coldest month of the year, is generally a quite cold month. The average temperature is of 4.8 °C (41 °F), with a minimum of 1.6 °C (34.8 °F) and a maximum of 8.1 °C (46.6 °F).
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around -5.5 °C (22 °F). However, it dropped to -14 °C (6.8 °F) in December 2009.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 13 °C (56 °F). However, it reached 17 °C (62.6 °F) in December 2014.
Rain iconPrecipitation amounts to 180 mm (7.1 in), distributed over 24 days.
The day lasts on average 8 hours and 40 minutes. December 21, the winter solstice, is the shortest day of the year in the Northern Hemisphere.
The average humidity is 84%. Hence, the air is normally humid.
The average wind speed is 10 kph (6 mph).

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