Skamania Fish Hatchery, Washington climate: Climate normals at a NOAA weather station
Skamania Fish Hatchery's normal year runs from 33°F December nights to 80°F August afternoons, with 83.3 inches of precipitation and 6 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 10.5°C, December lows of 1°C, August highs of 27°C, 2,115 mm of precipitation a year.
- NOAA stationSkamania Fish Hatchery
- Station IDUSC00457696
- Location45.62°N 122.22°W
- Elevation435 ft (133 m)
On October 23, the normal high in Skamania Fish Hatchery is 59°F and the normal low 40°F, and the chance of measurable rain or snow is 54%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Skamania Fish Hatchery.
- Jan 44° 33°
- Feb 49° 33°
- Mar 54° 35°
- Apr 59° 38°
- May 67° 43°
- Jun 71° 47°
- Jul 79° 50°
- Aug 80° 50°
- Sep 74° 46°
- Oct 62° 41°
- Nov 51° 37°
- Dec 44° 33°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like at Skamania Fish Hatchery each month?
August is the warmest month, with normal highs of 80°F; December the coldest, with normal lows of 33°F. The most precipitation falls in November (12.37 in), the least in July (0.90 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 44°F | 33°F | 38.8°F | 11.14 | 2.1 | 20 | <1 | 16 | 9 h |
| February | 49°F | 33°F | 40.9°F | 8.75 | 1.9 | 17 | <1 | 14 | 10 h 20 min |
| March | 54°F | 35°F | 44.2°F | 8.86 | 0.3 | 20 | <1 | 13 | 11 h 50 min |
| April | 59°F | 38°F | 48.6°F | 7.52 | 0.0 | 19 | <1 | 6 | 13 h 30 min |
| May | 67°F | 43°F | 54.8°F | 5.19 | 0.0 | 15 | 1 | 2 | 14 h 50 min |
| June | 71°F | 47°F | 59.3°F | 4.08 | 0.0 | 12 | 2 | <1 | 15 h 40 min |
| July | 79°F | 50°F | 64.9°F | 0.90 | 0.0 | 5 | 5 | <1 | 15 h 20 min |
| August | 80°F | 50°F | 65.0°F | 1.22 | 0.0 | 5 | 5 | <1 | 14 h 10 min |
| September | 74°F | 46°F | 59.9°F | 3.19 | 0.0 | 8 | 2 | 1 | 12 h 40 min |
| October | 62°F | 41°F | 51.8°F | 7.82 | 0.0 | 15 | <1 | 4 | 11 h |
| November | 51°F | 37°F | 43.8°F | 12.37 | 0.4 | 20 | <1 | 10 | 9 h 30 min |
| December | 44°F | 33°F | 38.5°F | 12.23 | 1.5 | 21 | <1 | 15 | 8 h 40 min |
| Year (annual) | 61°F | 41°F | 50.9°F | 83.27 | 6.2 | 177 | 15 | 81 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 7°C | 1°C | 3.8°C | 283 mm | 5 cm |
| February | 9°C | 1°C | 4.9°C | 222 mm | 5 cm |
| March | 12°C | 2°C | 6.8°C | 225 mm | 1 cm |
| April | 15°C | 3°C | 9.2°C | 191 mm | 0 cm |
| May | 19°C | 6°C | 12.7°C | 132 mm | 0 cm |
| June | 22°C | 8°C | 15.2°C | 104 mm | 0 cm |
| July | 26°C | 10°C | 18.3°C | 23 mm | 0 cm |
| August | 27°C | 10°C | 18.3°C | 31 mm | 0 cm |
| September | 23°C | 8°C | 15.5°C | 81 mm | 0 cm |
| October | 17°C | 5°C | 11.0°C | 199 mm | 0 cm |
| November | 10°C | 3°C | 6.6°C | 314 mm | 1 cm |
| December | 7°C | 1°C | 3.6°C | 311 mm | 4 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00457696; 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.
Which months are mildest at Skamania Fish Hatchery?
Normal highs sit between 65°F and 85°F in May, June, July, August and September. Of those, August 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 USC00457696.
When is the last frost at Skamania Fish Hatchery?
In Skamania Fish Hatchery, the last spring frost (32°F) comes after April 29 in half of years and after May 15 in one year in ten; the first autumn frost comes before October 22 in half of years and before September 27 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 291 year in 10 after May 15; 9 in 10 after April 5
- First autumn frost, half of years before
- October 221 year in 10 before September 27; 9 in 10 before November 15
NOAA puts the median frost-free season at 177 days, and the season without a hard freeze (28°F) at 232 days.
A hard freeze (28°F) comes after March 28 in half of springs and before November 14 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Skamania Fish Hatchery in zone 8b in ZIP code 98671, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, the station is in zone 8b: the coldest night of a typical year reaches 16°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 USC00457696; 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 at Skamania Fish Hatchery?
In a normal year in Skamania Fish Hatchery, 15 days a year reach 90°F (1 of them 100°F or more), 81 nights fall to 32°F or colder and 177 days bring measurable precipitation.
- Days at 90°F or more
- 15a normal year
- Days at 100°F or more
- 1a normal year
- Nights at 32°F or colder
- 81a normal year
- Days that stay below freezing
- 3high of 32°F or less
- Days with 0.01 inch of precipitation
- 177a normal year
- Days with 1 inch of snow or more
- 3a normal year
The highest temperature in this station's record (since 1965) is 111°F, on June 29, 2021; the lowest is 0°F, on December 31, 1968.
The wettest calendar year on that record is 1971, with 110.83 in; the snowiest season is 2008–09, with 57.8 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00457696; records: ACIS (NOAA Regional Climate Centers), station USC00457696. Records use complete months only; a month missing more than three days is left out.
How sunny is it at Skamania Fish Hatchery?
Over a year 70% of the sunlight that would reach the ground under clear skies gets through the clouds at Skamania Fish Hatchery, 3.7 kWh per square metre a day. July is the sunniest month (83%) and December the cloudiest (52%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 54% | 1.2 |
| February | 60% | 2.1 |
| March | 59% | 3.0 |
| April | 63% | 4.3 |
| May | 68% | 5.4 |
| June | 70% | 6.0 |
| July | 83% | 6.8 |
| August | 83% | 5.8 |
| September | 78% | 4.3 |
| October | 67% | 2.6 |
| November | 56% | 1.4 |
| December | 52% | 1.0 |
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 many heating and cooling degree days does Skamania Fish Hatchery record?
A normal year at Skamania Fish Hatchery brings 5,316 heating degree days, 1% fewer than the median U.S. place (5,373), and 181 cooling degree days, 80% fewer than the median (908). Eight months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 1,861 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 812 | 0 |
| February | 675 | 0 |
| March | 645 | 0 |
| April | 493 | 1 |
| May | 322 | 6 |
| June | 192 | 20 |
| July | 72 | 69 |
| August | 65 | 65 |
| September | 171 | 20 |
| October | 410 | 1 |
| November | 638 | 0 |
| December | 821 | 0 |
| Year (annual) | 5,316 | 181 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00457696. 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.
Have recent years at Skamania Fish Hatchery been warmer than normal?
2024 averaged 51.6°F, 0.7°F above the 1991-2020 normal of 50.9°F. 3 of the 4 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2021 | 51.6°F | +0.7°F | 78.74 | 28.7 |
| 2022 | 50.9°F | at normal | 88.97 | 13.4 |
| 2023 | 51.8°F | +0.9°F | 75.64 | 16.1 |
| 2024 | 51.6°F | +0.7°F | 89.07 | – |
Over 41 complete years from 1970 to 2024, the station's annual mean temperature rose at a fitted 3.5°F per century (+0.20°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USC00457696; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Skamania Fish Hatchery's climate compare?
Skamania Fish Hatchery is warmer than 55 of the 96 places with their own NOAA record in Washington, and wetter than 83. Across the 7,247 U.S. stations with normals, its annual mean of 50.9°F is warmer than 44%.
In the Köppen classification computed from these normals, Skamania Fish Hatchery 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 Skamania Fish Hatchery share this climate record?
3 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.
- Sandy, OR12,990 people · 16 mi S
- Boring, OR1,616 people · 15 mi SW
- Orient, OR435 people · 12 mi SW
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 Skamania Fish Hatchery's climate
What is the coldest month at Skamania Fish Hatchery?
December, with a normal high of 44°F and a normal low of 33°F. The warmest is August (80°F by day, 50°F at night).
Does it snow at Skamania Fish Hatchery?
Yes: 6 inches in a normal year, falling on 5 days with 0.1 inch or more, the most in January (2.1 inches).
What is the rainiest month at Skamania Fish Hatchery?
November, with 12.37 in of precipitation in a normal year; the driest is July with 0.90 in.
What plant hardiness zone is Skamania Fish Hatchery in?
The USDA's 2023 map puts Skamania Fish Hatchery in zone 8b in ZIP code 98671, the nearest ZIP area. By the same method at the station, the coldest night of a typical year reaches 16°F (24 years, 1991-2020): zone 8b.
How late can frost come at Skamania Fish Hatchery?
In half of years the last 32°F night comes after April 29; in one year in ten it comes after May 15. Waiting until May 15 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Washington climateThe statewide normals and every place in the state
- Troutdale, OR9 miles from this station, 53.4°F a year
- Portland Troutdale Airport, OR11 miles from this station, 54.7°F a year
- Headworks Portland Water B, OR12 miles from this station, 51.4°F a year
- Bonneville Dam, OR13 miles from this station, 52.8°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made