Quincy, Washington climate: Normal weather by month, frost dates and records
Quincy's normal year runs from 23°F December nights to 87°F July afternoons, with 7.5 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 10.6°C, December lows of −5°C, July highs of 31°C, 190 mm of precipitation a year.
- NOAA stationQuincy
- Station IDUSC00456880
- Location47.22°N 119.85°W
- Elevation1,286 ft (392 m)
- Population8,294
On October 24, the normal high in Quincy is 58°F and the normal low 35°F, and the chance of measurable rain or snow is 18%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Quincy.
- Jan 36° 23°
- Feb 44° 27°
- Mar 55° 32°
- Apr 63° 39°
- May 73° 47°
- Jun 79° 53°
- Jul 87° 59°
- Aug 87° 58°
- Sep 78° 50°
- Oct 63° 39°
- Nov 47° 29°
- Dec 36° 23°
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 Quincy each month?
July is the warmest month, with normal highs of 87°F; December the coldest, with normal lows of 23°F. The most precipitation falls in December (1.30 in), the least in August (0.12 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 36°F | 23°F | 29.9°F | 0.99 | 7 | <1 | 27 | 8 h 50 min |
| February | 44°F | 27°F | 35.3°F | 0.65 | 5 | <1 | 22 | 10 h 20 min |
| March | 55°F | 32°F | 43.4°F | 0.70 | 5 | <1 | 16 | 11 h 50 min |
| April | 63°F | 39°F | 51.1°F | 0.58 | 5 | <1 | 5 | 13 h 30 min |
| May | 73°F | 47°F | 60.1°F | 0.69 | 5 | 1 | <1 | 15 h |
| June | 79°F | 53°F | 66.1°F | 0.45 | 4 | 3 | <1 | 15 h 50 min |
| July | 87°F | 59°F | 73.3°F | 0.23 | 1 | 13 | <1 | 15 h 40 min |
| August | 87°F | 58°F | 72.2°F | 0.12 | 2 | 10 | <1 | 14 h 20 min |
| September | 78°F | 50°F | 63.8°F | 0.20 | 2 | 2 | <1 | 12 h 40 min |
| October | 63°F | 39°F | 50.7°F | 0.64 | 5 | <1 | 6 | 11 h |
| November | 47°F | 29°F | 38.1°F | 0.93 | 8 | <1 | 19 | 9 h 20 min |
| December | 36°F | 23°F | 29.5°F | 1.30 | 8 | <1 | 28 | 8 h 30 min |
| Year (annual) | 62°F | 40°F | 51.1°F | 7.48 | 55 | 28 | 122 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 2°C | −5°C | −1.2°C | 25 mm |
| February | 7°C | −3°C | 1.8°C | 17 mm |
| March | 13°C | 0°C | 6.3°C | 18 mm |
| April | 17°C | 4°C | 10.6°C | 15 mm |
| May | 23°C | 8°C | 15.6°C | 18 mm |
| June | 26°C | 12°C | 18.9°C | 11 mm |
| July | 31°C | 15°C | 22.9°C | 6 mm |
| August | 30°C | 14°C | 22.3°C | 3 mm |
| September | 25°C | 10°C | 17.7°C | 5 mm |
| October | 17°C | 4°C | 10.4°C | 16 mm |
| November | 8°C | −1°C | 3.4°C | 24 mm |
| December | 2°C | −5°C | −1.4°C | 33 mm |
NOAA publishes no 1991-2020 snowfall normal for this station, and no record within 25 miles keeps one, so snow is left out here rather than estimated.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00456880; 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 Quincy?
Normal highs sit between 65°F and 85°F in May, June and September. Of those, September has the fewest days with rain (2).
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 USC00456880.
When is the last frost in Quincy?
In Quincy, the last spring frost (32°F) comes after April 21 in half of years and after May 5 in one year in ten; the first autumn frost comes before October 16 in half of years and before October 4 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 211 year in 10 after May 5; 9 in 10 after April 5
- First autumn frost, half of years before
- October 161 year in 10 before October 4; 9 in 10 before October 27
NOAA puts the median frost-free season at 178 days, and the season without a hard freeze (28°F) at 206 days.
A hard freeze (28°F) comes after April 2 in half of springs and before October 27 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Quincy in zone 7a in ZIP code 98848, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Quincy's NOAA station is in zone 7a: the coldest night of a typical year reaches 3°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 USC00456880; 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 Quincy?
In a normal year in Quincy, 28 days a year reach 90°F (1 of them 100°F or more), 122 nights fall to 32°F or colder and 55 days bring measurable precipitation.
- Days at 90°F or more
- 28a normal year
- Days at 100°F or more
- 1a normal year
- Nights at 32°F or colder
- 122a normal year
- Days that stay below freezing
- 27high of 32°F or less
- Days with 0.01 inch of precipitation
- 55a normal year
The highest temperature in this station's record (since 1941) is 109°F, on July 17, 1941; the lowest is −29°F, on January 31, 1950.
The wettest calendar year on that record is 1950, with 11.85 in; the snowiest season is 1968–69, with 43.3 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00456880; records: ACIS (NOAA Regional Climate Centers), station USC00456880. Records use complete months only; a month missing more than three days is left out.
How sunny is Quincy?
Over a year 80% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Quincy, 4.1 kWh per square metre a day. July is the sunniest month (92%) and December the cloudiest (53%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 55% | 1.1 |
| February | 69% | 2.3 |
| March | 71% | 3.5 |
| April | 78% | 5.2 |
| May | 80% | 6.4 |
| June | 81% | 7.0 |
| July | 92% | 7.5 |
| August | 91% | 6.3 |
| September | 86% | 4.6 |
| October | 78% | 2.9 |
| November | 64% | 1.5 |
| December | 53% | 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 Quincy need?
A normal year in Quincy brings 5,723 heating degree days, 7% more than the median U.S. place (5,373), and 690 cooling degree days, 24% 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 2,836 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,088 | 0 |
| February | 833 | 0 |
| March | 668 | 0 |
| April | 420 | 2 |
| May | 185 | 33 |
| June | 58 | 93 |
| July | 7 | 264 |
| August | 10 | 233 |
| September | 101 | 65 |
| October | 445 | 2 |
| November | 809 | 0 |
| December | 1,100 | 0 |
| Year (annual) | 5,723 | 690 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00456880. 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 Quincy been warmer than normal lately?
2025 averaged 55.4°F, 4.3°F above the 1991-2020 normal of 51.1°F. 1 of the 2 complete years since 2022 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2022 | 50.1°F | −1.0°F | – |
| 2025 | 55.4°F | +4.3°F | – |
Over 47 complete years from 1943 to 2025, the station's annual mean temperature rose at a fitted 3.2°F per century (+0.18°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USC00456880; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Quincy's climate compare?
Quincy is warmer than 62 of the other 95 places with their own NOAA record in Washington, and wetter than 1. Across the 7,247 U.S. stations with normals, its annual mean of 51.1°F is warmer than 45%.
In the Köppen classification computed from these normals, Quincy is BSk: cold semi-arid steppe. 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 Quincy 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.
- George, WA1,006 people · 10 mi S
- Crescent Bar, WA212 people · 7 mi W
- Sunland Estates, WA85 people · 13 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 Quincy's climate
What is the coldest month in Quincy?
December, with a normal high of 36°F and a normal low of 23°F. The warmest is July (87°F by day, 59°F at night).
What is the rainiest month in Quincy?
December, with 1.30 in of precipitation in a normal year; the driest is August with 0.12 in.
What plant hardiness zone is Quincy in?
The USDA's 2023 map puts Quincy in zone 7a in ZIP code 98848, the nearest ZIP area. By the same method at Quincy's NOAA station, the coldest night of a typical year reaches 3°F (24 years, 1991-2020): zone 7a.
How late can frost come in Quincy?
In half of years the last 32°F night comes after April 21; in one year in ten it comes after May 5. Waiting until May 5 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Washington climateThe statewide normals and every place in the state
- Ephrata, WA17 miles from this station, 51.5°F a year
- Wenatchee, WA21 miles from this station, 51.2°F a year
- Moses Lake, WA25 miles from this station, 50.9°F a year
- Smyrna, WA28 miles from this station, 53.4°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made