Humptulips, Washington climate: Normal weather by month, frost dates and records
Humptulips's normal year runs from 34°F December nights to 70°F August afternoons, with 115.6 inches of precipitation and 1 inch of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 9.3°C, December lows of 1°C, August highs of 21°C, 2,937 mm of precipitation a year.
- NOAA stationHumptulips Salmon Hatchery
- Station IDUSC00453826
- Location47.23°N 123.99°W
- Elevation140 ft (43 m)
- Population (census place)194
On October 14, the normal high in Humptulips is 58°F and the normal low 41°F, and the chance of measurable rain or snow is 49%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Humptulips.
- Jan 45° 35°
- Feb 48° 34°
- Mar 51° 35°
- Apr 55° 38°
- May 61° 42°
- Jun 64° 47°
- Jul 69° 50°
- Aug 70° 50°
- Sep 67° 46°
- Oct 58° 41°
- Nov 49° 36°
- Dec 44° 34°
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 Humptulips each month?
August is the warmest month, with normal highs of 70°F; December the coldest, with normal lows of 34°F. The most precipitation falls in January (18.69 in), the least in July (1.62 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 45°F | 35°F | 40.0°F | 18.69 | 0.5 | 21 | <1 | 13 | 8 h 50 min |
| February | 48°F | 34°F | 40.6°F | 11.34 | 0.0 | 17 | <1 | 14 | 10 h 20 min |
| March | 51°F | 35°F | 43.0°F | 13.23 | 0.0 | 20 | <1 | 12 | 11 h 50 min |
| April | 55°F | 38°F | 46.3°F | 8.65 | 0.0 | 17 | <1 | 6 | 13 h 30 min |
| May | 61°F | 42°F | 51.8°F | 4.54 | 0.0 | 12 | <1 | 1 | 15 h |
| June | 64°F | 47°F | 55.6°F | 3.59 | 0.0 | 11 | 1 | <1 | 15 h 50 min |
| July | 69°F | 50°F | 59.6°F | 1.62 | 0.0 | 6 | 1 | <1 | 15 h 40 min |
| August | 70°F | 50°F | 60.1°F | 2.49 | 0.0 | 6 | 1 | <1 | 14 h 20 min |
| September | 67°F | 46°F | 56.7°F | 4.56 | 0.0 | 10 | <1 | <1 | 12 h 40 min |
| October | 58°F | 41°F | 49.4°F | 11.24 | 0.0 | 16 | <1 | 4 | 11 h |
| November | 49°F | 36°F | 42.8°F | 18.30 | 0.1 | 20 | <1 | 10 | 9 h 20 min |
| December | 44°F | 34°F | 39.1°F | 17.39 | 0.4 | 20 | <1 | 14 | 8 h 30 min |
| Year (annual) | 57°F | 41°F | 48.8°F | 115.64 | 1.0 | 175 | 2 | 73 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 7°C | 2°C | 4.4°C | 475 mm | 1 cm |
| February | 9°C | 1°C | 4.8°C | 288 mm | 0 cm |
| March | 11°C | 2°C | 6.1°C | 336 mm | 0 cm |
| April | 13°C | 3°C | 7.9°C | 220 mm | 0 cm |
| May | 16°C | 6°C | 11.0°C | 115 mm | 0 cm |
| June | 18°C | 8°C | 13.1°C | 91 mm | 0 cm |
| July | 21°C | 10°C | 15.3°C | 41 mm | 0 cm |
| August | 21°C | 10°C | 15.6°C | 63 mm | 0 cm |
| September | 19°C | 8°C | 13.7°C | 116 mm | 0 cm |
| October | 14°C | 5°C | 9.7°C | 285 mm | 0 cm |
| November | 10°C | 2°C | 6.0°C | 465 mm | 0 cm |
| December | 7°C | 1°C | 3.9°C | 442 mm | 1 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00453826; 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 Humptulips?
Normal highs sit between 65°F and 85°F in July, August and September. Of those, July has the fewest days with rain (6).
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 USC00453826.
When is the last frost in Humptulips?
In Humptulips, the last spring frost (32°F) comes after April 26 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 October 3 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 261 year in 10 after May 15; 9 in 10 after March 31
- First autumn frost, half of years before
- October 221 year in 10 before October 3; 9 in 10 before November 15
NOAA puts the median frost-free season at 180 days, and the season without a hard freeze (28°F) at 233 days.
A hard freeze (28°F) comes after March 27 in half of springs and before November 13 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Humptulips in zone 8b in ZIP code 98552, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Humptulips's NOAA station is in zone 9a: the coldest night of a typical year reaches 20°F (18 complete years); the map interpolates between stations and terrain, so the station and the ZIP area can differ by half a zone.
Frost dates for every NOAA station in Washington · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00453826; 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 Humptulips?
In a normal year in Humptulips, 2 days a year reach 90°F, 73 nights fall to 32°F or colder and 175 days bring measurable precipitation.
- Days at 90°F or more
- 2a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 73a normal year
- Days that stay below freezing
- 1high of 32°F or less
- Days with 0.01 inch of precipitation
- 175a normal year
- Days with 1 inch of snow or more
- 1a normal year
Source: NOAA NCEI 1991-2020 annual normals, station USC00453826.
How sunny is Humptulips?
Over a year 67% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Humptulips, 3.4 kWh per square metre a day. August is the sunniest month (78%) and December the cloudiest (51%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 52% | 1.0 |
| February | 60% | 1.9 |
| March | 58% | 2.9 |
| April | 63% | 4.2 |
| May | 66% | 5.3 |
| June | 68% | 5.7 |
| July | 78% | 6.3 |
| August | 78% | 5.4 |
| September | 74% | 3.9 |
| October | 63% | 2.3 |
| November | 54% | 1.2 |
| December | 51% | 0.8 |
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 Humptulips need?
A normal year in Humptulips brings 5,937 heating degree days, 10% more than the median U.S. place (5,373), and 27 cooling degree days, 97% 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 1,176 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 774 | 0 |
| February | 685 | 0 |
| March | 682 | 0 |
| April | 561 | 0 |
| May | 409 | 2 |
| June | 285 | 4 |
| July | 176 | 10 |
| August | 159 | 8 |
| September | 253 | 3 |
| October | 484 | 0 |
| November | 666 | 0 |
| December | 804 | 0 |
| Year (annual) | 5,937 | 27 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00453826. 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 Humptulips been warmer than normal lately?
2024 averaged 49.3°F, 0.5°F above the 1991-2020 normal of 48.8°F. 1 of the 2 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2021 | 48.8°F | at normal | 125.23 | – |
| 2024 | 49.3°F | +0.5°F | 113.47 | – |
Source: observed years: ACIS, station USC00453826. A year counts only with all twelve months complete.
How does Humptulips's climate compare?
Humptulips is warmer than 22 of the other 95 places with their own NOAA record in Washington, and wetter than 89. Across the 7,247 U.S. stations with normals, its annual mean of 48.8°F is warmer than 35%.
In the Köppen classification computed from these normals, Humptulips is Cfb: temperate, no dry season, 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 Humptulips 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.
- Taholah, WA778 people · 15 mi NW
- Copalis Beach, WA442 people · 11 mi SW
- Moclips, WA150 people · 10 mi W
- Ocean City, WA111 people · 13 mi SW
- Qui-nai-elt Village, WA83 people · 9 mi W
- Santiago, WA78 people · 12 mi W
- Pacific Beach, WA0 people · 10 mi W
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 Humptulips's climate
What is the coldest month in Humptulips?
December, with a normal high of 44°F and a normal low of 34°F. The warmest is August (70°F by day, 50°F at night).
Does it snow in Humptulips?
Yes: 1 inch in a normal year, falling on 1 days with 0.1 inch or more, the most in January (0.5 inches).
What is the rainiest month in Humptulips?
January, with 18.69 in of precipitation in a normal year; the driest is July with 1.62 in.
What plant hardiness zone is Humptulips in?
The USDA's 2023 map puts Humptulips in zone 8b in ZIP code 98552, the nearest ZIP area. By the same method at Humptulips's NOAA station, the coldest night of a typical year reaches 20°F (18 years, 1991-2020): zone 9a.
How late can frost come in Humptulips?
In half of years the last 32°F night comes after April 26; 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
- Hoquiam, WA18 miles from this station, 51.0°F a year
- Aberdeen, WA20 miles from this station, 51.4°F a year
- Quinault (4 mi NE), WA21 miles from this station, 50.0°F a year
- Clearwater, WA27 miles from this station, 50.4°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made