Longview, Washington climate: Normal weather by month, frost dates and records
Longview's normal year runs from 35°F December nights to 80°F August afternoons, with 48.1 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 11.8°C, December lows of 2°C, August highs of 27°C, 1,222 mm of precipitation a year.
- NOAA stationLongview
- Station IDUSC00454769
- Location46.15°N 122.92°W
- Elevation12 ft (4 m)
- Population38,294
On October 22, the normal high in Longview is 61°F and the normal low 43°F, and the chance of measurable rain or snow is 61%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Longview.
- Jan 48° 35°
- Feb 52° 35°
- Mar 57° 38°
- Apr 62° 40°
- May 69° 45°
- Jun 73° 50°
- Jul 79° 53°
- Aug 80° 53°
- Sep 76° 50°
- Oct 64° 44°
- Nov 53° 39°
- Dec 47° 35°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like in Longview each month?
August is the warmest month, with normal highs of 80°F; December the coldest, with normal lows of 35°F. The most precipitation falls in November (7.24 in), the least in July (0.63 in).
Each month has its own page with the day-by-day normals, the month's records and its recent years:
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 48°F | 35°F | 41.4°F | 6.53 | 24 | <1 | 10 | 9 h |
| February | 52°F | 35°F | 43.4°F | 4.81 | 20 | <1 | 9 | 10 h 20 min |
| March | 57°F | 38°F | 47.2°F | 4.91 | 21 | <1 | 5 | 11 h 50 min |
| April | 62°F | 40°F | 51.2°F | 4.08 | 19 | <1 | 2 | 13 h 30 min |
| May | 69°F | 45°F | 57.1°F | 3.11 | 14 | <1 | <1 | 15 h |
| June | 73°F | 50°F | 61.2°F | 2.03 | 11 | 1 | <1 | 15 h 40 min |
| July | 79°F | 53°F | 66.4°F | 0.63 | 5 | 4 | <1 | 15 h 30 min |
| August | 80°F | 53°F | 66.9°F | 0.97 | 5 | 3 | <1 | 14 h 10 min |
| September | 76°F | 50°F | 62.6°F | 2.29 | 9 | 1 | <1 | 12 h 40 min |
| October | 64°F | 44°F | 54.0°F | 4.38 | 17 | <1 | 1 | 11 h |
| November | 53°F | 39°F | 45.8°F | 7.24 | 23 | <1 | 5 | 9 h 30 min |
| December | 47°F | 35°F | 40.7°F | 7.14 | 24 | <1 | 9 | 8 h 40 min |
| Year (annual) | 63°F | 43°F | 53.2°F | 48.12 | 192 | 10 | 41 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 9°C | 2°C | 5.2°C | 166 mm |
| February | 11°C | 2°C | 6.3°C | 122 mm |
| March | 14°C | 3°C | 8.4°C | 125 mm |
| April | 17°C | 5°C | 10.7°C | 104 mm |
| May | 20°C | 7°C | 13.9°C | 79 mm |
| June | 23°C | 10°C | 16.2°C | 52 mm |
| July | 26°C | 12°C | 19.1°C | 16 mm |
| August | 27°C | 12°C | 19.4°C | 25 mm |
| September | 24°C | 10°C | 17.0°C | 58 mm |
| October | 18°C | 7°C | 12.2°C | 111 mm |
| November | 12°C | 4°C | 7.7°C | 184 mm |
| December | 8°C | 2°C | 4.8°C | 181 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Clatskanie (14 miles away), gets 2 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00454769; annual normals. Wet days: 0.01 inch or more; 90°F days and freezing nights: NOAA's day counts. Daylight: sunrise to sunset on the 15th, computed from the latitude.
When is the best weather to visit Longview?
Normal highs sit between 65°F and 85°F in May, June, July, August and September. Of those, July has the fewest days with rain (5).
That is a measurement, not a recommendation: it counts the months whose normal afternoon high sits between 65°F and 85°F, where a light layer is enough by day.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00454769.
When is the last frost in Longview?
In Longview, the last spring frost (32°F) comes after April 8 in half of years and after May 2 in one year in ten; the first autumn frost comes before November 5 in half of years and before October 17 in one year in ten.
Frost-free in half of yearsFrost in 1 to 9 years out of 10Frost most years
- Last spring frost, half of years after
- April 81 year in 10 after May 2; 9 in 10 after March 11
- First autumn frost, half of years before
- November 51 year in 10 before October 17; 9 in 10 before November 28
NOAA puts the median frost-free season at 210 days, and the season without a hard freeze (28°F) at 262 days.
A hard freeze (28°F) comes after March 6 in half of springs and before November 24 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Longview in zone 8b in ZIP code 98632. By the map's own method, the average of each year's coldest night over 1991-2020, Longview's NOAA station is in zone 8b: the coldest night of a typical year reaches 19°F (24 complete years).
Frost dates for every NOAA station in Washington · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00454769; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; the station zone: ACIS daily lows, 1991-2020. A 10% date means one year in ten has a frost after it in spring or before it in autumn.
How hot and how cold does it get in Longview?
In a normal year in Longview, 10 days a year reach 90°F (1 of them 100°F or more), 41 nights fall to 32°F or colder and 192 days bring measurable precipitation.
- Days at 90°F or more
- 10a normal year
- Days at 100°F or more
- 1a normal year
- Nights at 32°F or colder
- 41a normal year
- Days that stay below freezing
- 1high of 32°F or less
- Days with 0.01 inch of precipitation
- 192a normal year
The highest temperature in this station's record (since 1925) is 108°F, on August 10, 1981; the lowest is −6°F, on January 22, 1930.
The wettest calendar year on that record is 2006, with 59.34 in; the snowiest season is 1949–50, with 39.2 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00454769; records: ACIS (NOAA Regional Climate Centers), station USC00454769. Records use complete months only; a month missing more than three days is left out.
How sunny is Longview?
Over a year 67% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Longview, 3.5 kWh per square metre a day. July is the sunniest month (78%) and December the cloudiest (52%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 52% | 1.1 |
| February | 59% | 2.0 |
| March | 57% | 2.9 |
| April | 62% | 4.2 |
| May | 66% | 5.2 |
| June | 67% | 5.7 |
| July | 78% | 6.4 |
| August | 78% | 5.4 |
| September | 75% | 4.0 |
| October | 65% | 2.4 |
| November | 55% | 1.3 |
| December | 52% | 0.9 |
Source: NASA POWER solar climatology, 2001-2020 (CERES SYN1deg). Satellite-based, for the 1-degree cell (about 100 km across) around the station, so it describes the area rather than the airport.
How much heating and cooling does Longview need?
A normal year in Longview brings 4,545 heating degree days, 15% fewer than the median U.S. place (5,373), and 243 cooling degree days, 73% fewer than the median (908). Seven months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 2,268 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 732 | 0 |
| February | 606 | 0 |
| March | 552 | 0 |
| April | 413 | 1 |
| May | 256 | 9 |
| June | 138 | 24 |
| July | 40 | 81 |
| August | 33 | 91 |
| September | 106 | 35 |
| October | 341 | 2 |
| November | 576 | 0 |
| December | 753 | 0 |
| Year (annual) | 4,545 | 243 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00454769. A degree day is one degree of a day's mean temperature below 65°F (heating) or above it (cooling); utilities use them to estimate energy use.
Has Longview been warmer than normal lately?
2023 averaged 54.4°F, 1.2°F above the 1991-2020 normal of 53.2°F. 3 of the 3 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 54.2°F | +1.0°F | 49.75 |
| 2022 | 54.0°F | +0.8°F | 45.99 |
| 2023 | 54.4°F | +1.2°F | 37.96 |
Over 80 complete years from 1929 to 2025, the station's annual mean temperature rose at a fitted 2.8°F per century (+0.15°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USC00454769; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Longview's climate compare?
Longview is warmer than 87 of the other 95 places with their own NOAA record in Washington, and wetter than 64. Across the 7,247 U.S. stations with normals, its annual mean of 53.2°F is warmer than 54%.
In the Köppen classification computed from these normals, Longview is Csb: temperate, dry-summer, warm summer. What the classes mean.
Places with the most similar year elsewhere
Measured month by month on the normal high, low and precipitation, among places of 20,000 or more people in other states:
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers. Similarity: the root-mean-square difference of the 36 monthly figures, precipitation weighted so an inch counts like 6°F.
Which places near Longview share this climate record?
7 places have no NOAA station with 1991-2020 normals of their own, and this station is the nearest full record. A place's own climate can differ from these figures, by several degrees where it sits much higher or lower than the station, nearer the coast, or inside a large city's heat; for the larger places the next nearest records are named with their yearly mean, so the spread around them is visible, and places of 50,000 or more have their own page with NOAA's gridded normals.
- Kelso, WA12,737 people · 3 mi SE
- Lexington, WA4,495 people · 3 mi N
- Longview Heights, WA4,403 people · 3 mi NW
- Castle Rock, WA2,445 people · 8 mi N
- Beacon Hill, WA1,978 people · 1 mi N
- Rainier, OR1,932 people · 6 mi S
- Prescott, OR82 people · 7 mi S
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
Questions about Longview's climate
What is the coldest month in Longview?
December, with a normal high of 47°F and a normal low of 35°F. The warmest is August (80°F by day, 53°F at night).
Does it snow in Longview?
Yes. NOAA publishes no 1991-2020 snowfall normal for Longview's NOAA station; the nearest record that keeps one, Clatskanie (14 miles away), records 2 inches of snow in a normal year.
What is the rainiest month in Longview?
November, with 7.24 in of precipitation in a normal year; the driest is July with 0.63 in.
What plant hardiness zone is Longview in?
The USDA's 2023 map puts Longview in zone 8b in ZIP code 98632. By the same method at Longview's NOAA station, the coldest night of a typical year reaches 19°F (24 years, 1991-2020): zone 8b.
How late can frost come in Longview?
In half of years the last 32°F night comes after April 8; in one year in ten it comes after May 2. Waiting until May 2 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Longview in OctoberThis month day by day, its records and recent years
- Washington climateThe statewide normals and every place in the state
- Clatskanie, OR14 miles from this station, 50.8°F a year
- St. Helens, OR21 miles from this station, 51.6°F a year
- Toledo, WA24 miles from this station, 52.3°F a year
- Vernonia, OR24 miles from this station, 49.4°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made