Longview climate — normals and trends
Longview (United States) has a warm-summer mediterranean climate (Csb) under the Köppen-Geiger classification. Its mean annual temperature is 10.2 °C and it receives 1,428 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is August (17.4 °C on average) and the coldest is January (3.6 °C). Rainfall peaks in November.
Longview averages 46 frost days, 11 hot days (≥ 30 °C) and 154 rainy days per year.
Longview has warmed by +1.5 °C between 1940 and 2025, or +0.18 °C per decade. This trend is statistically significant.
The number of frost days there went from about 56 to 36 per year over the period.
The hottest day of the period reached 44.3 °C (on 28 June 2021) and the coldest -25.1 °C (on 4 February 1989).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
LongviewWashington
- coords
- 46.14°, -122.94°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
10.2°C
Average daily high
15.1°C
Average daily low
5.9°C
Annual rainfall
1,428mm
Sunshine / day
8.2h
Mean relative humidity
80%
Average peak wind
12.6km/h
Seasonal range
13.8°C
Frost days (< 0 °C)
46 d/yr
Hot days (≥ 30 °C)
11 d/yr
Rainy days (≥ 1 mm)
154 d/yr
Annual snowfall
41.1 cm
Average feels-like high
13.6 °C
Average feels-like low
3.8 °C
Average peak gust
34.2 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
12.8 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.5 °C
since 1940
+0.2 °C per decade · r² = 0.39 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
44.3 °C
28 June 2021
Coldest day
-25.1 °C
4 February 1989
Wettest day
90 mm
25 November 1998
Windiest day
45.0 km/h
12 October 1962
Strongest gust
122.0 km/h
12 December 1995
Hottest feels-like
47.1 °C
28 June 2021
Coldest feels-like
-30.4 °C
4 February 1989
Snowiest day
23.7 cm
20 January 1943
Sunniest day
15.4 h
17 June 1945
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 7.9 °C | +1.0 °C | 80 mm | -117 mm |
| Feb | 8.3 °C | -0.6 °C | 178 mm | +22 mm |
| Mar | 12.3 °C | +1.0 °C | 213 mm | +44 mm |
| Apr | 16.4 °C | +2.2 °C | 77 mm | -44 mm |
| May | 18.1 °C | +0.5 °C | 42 mm | -38 mm |
| Jun | 21.9 °C | +1.6 °C | 21 mm | -32 mm |
| Jul | 25.2 °C | +1.1 °C | 0 mm | -18 mm |
| Aug | 25.6 °C | +1.3 °C | 34 mm | +7 mm |
| Sep | 22.7 °C | +1.2 °C | 37 mm | -22 mm |
| Oct | 15.3 °C | -0.1 °C | 145 mm | +12 mm |
| Nov | 11.4 °C | +1.6 °C | 171 mm | -39 mm |
| Dec | 9.9 °C | +3.0 °C | 255 mm | +49 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Longview?
Longview has a warm-summer mediterranean climate (Köppen Csb). Over 1940-2025, the average annual temperature is 10.2 °C and it receives 1,428 mm of precipitation per year.
What is the hottest day ever recorded in Longview?
The hottest day measured in Longview between 1940 and 2025 was 28 June 2021, reaching 44.3 °C.
What is the coldest day in Longview?
The coldest day measured in Longview between 1940 and 2025 was 4 February 1989, at -25.1 °C.
Does it snow in Longview?
Yes. Longview gets on average 41.1 cm of snow per year and has around 46 frost days.
Has the climate of Longview warmed?
Yes: Longview warmed by +1.5 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Longview?
The wettest day measured in Longview between 1940 and 2025 was 25 November 1998, with 90 mm of rain in 24 hours.
What was the windiest day in Longview?
The windiest day measured in Longview between 1940 and 2025 was 12 October 1962, with winds reaching 45.0 km/h.
What is the warmest month in Longview?
The warmest month in Longview is August (17.4 °C on average); the coldest is January (3.6 °C).
How much does it rain in Longview?
Longview receives on average 1,428 mm of precipitation per year, spread over about 154 rainy days.
Is it sunny in Longview?
Longview gets on average 8.2 hours of sunshine per day, roughly 2,993 hours per year over 1940-2025.
What is the biggest single-day snowfall in Longview?
The heaviest 24-hour snowfall measured in Longview between 1940 and 2025 was 20 January 1943, with 23.7 cm.
Are there tropical nights in Longview?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Longview.
What was the most extreme apparent temperature in Longview?
In Longview, between 1940 and 2025, the highest apparent temperature reached 47.1 °C on 28 June 2021, and the lowest was -30.4 °C on 4 February 1989.
Compare Longview with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Longview