Quincy, California climate: Normal weather by month, frost dates and records
Quincy's normal year runs from 25°F December nights to 89°F July afternoons, with 41.7 inches of precipitation and 28 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 10.0°C, December lows of −4°C, July highs of 32°C, 1,058 mm of precipitation a year.
- NOAA stationQuincy
- Station IDUSC00047195
- Location39.94°N 120.95°W
- Elevation3,420 ft (1,042 m)
- From the centerunder 1 mile
- Population (census place)1,580
On October 24, the normal high in Quincy is 65°F and the normal low 31°F, and the chance of measurable rain or snow is 19%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Quincy.
- Jan 44° 25°
- Feb 50° 26°
- Mar 56° 29°
- Apr 62° 32°
- May 71° 39°
- Jun 80° 43°
- Jul 89° 48°
- Aug 88° 45°
- Sep 82° 40°
- Oct 69° 33°
- Nov 52° 28°
- Dec 43° 25°
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 89°F; December the coldest, with normal lows of 25°F. The most precipitation falls in January (7.65 in), the least in July (0.10 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 44°F | 25°F | 34.5°F | 7.65 | 5.8 | 12 | <1 | 25 | 9 h 40 min |
| February | 50°F | 26°F | 38.0°F | 7.59 | 7.6 | 11 | <1 | 22 | 10 h 40 min |
| March | 56°F | 29°F | 42.6°F | 6.66 | 5.4 | 13 | <1 | 21 | 11 h 50 min |
| April | 62°F | 32°F | 47.1°F | 3.14 | 1.6 | 9 | <1 | 14 | 13 h 10 min |
| May | 71°F | 39°F | 54.7°F | 1.94 | 0.0 | 7 | 2 | 3 | 14 h 20 min |
| June | 80°F | 43°F | 61.8°F | 0.71 | 0.0 | 3 | 7 | <1 | 15 h |
| July | 89°F | 48°F | 68.3°F | 0.10 | 0.0 | 1 | 19 | <1 | 14 h 50 min |
| August | 88°F | 45°F | 66.6°F | 0.14 | 0.0 | 1 | 17 | <1 | 13 h 50 min |
| September | 82°F | 40°F | 61.1°F | 0.42 | 0.0 | 2 | 9 | 1 | 12 h 30 min |
| October | 69°F | 33°F | 50.9°F | 1.94 | 0.1 | 5 | 1 | 14 | 11 h 10 min |
| November | 52°F | 28°F | 40.3°F | 4.06 | 1.7 | 8 | <1 | 20 | 10 h |
| December | 43°F | 25°F | 34.2°F | 7.32 | 6.2 | 12 | <1 | 24 | 9 h 20 min |
| Year (annual) | 66°F | 34°F | 50.0°F | 41.67 | 28.4 | 84 | 56 | 143 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 7°C | −4°C | 1.4°C | 194 mm | 15 cm |
| February | 10°C | −3°C | 3.3°C | 193 mm | 19 cm |
| March | 13°C | −2°C | 5.9°C | 169 mm | 14 cm |
| April | 17°C | 0°C | 8.4°C | 80 mm | 4 cm |
| May | 22°C | 4°C | 12.6°C | 49 mm | 0 cm |
| June | 27°C | 6°C | 16.6°C | 18 mm | 0 cm |
| July | 32°C | 9°C | 20.2°C | 3 mm | 0 cm |
| August | 31°C | 7°C | 19.2°C | 4 mm | 0 cm |
| September | 28°C | 4°C | 16.2°C | 11 mm | 0 cm |
| October | 21°C | 0°C | 10.5°C | 49 mm | 0 cm |
| November | 11°C | −2°C | 4.6°C | 103 mm | 4 cm |
| December | 6°C | −4°C | 1.2°C | 186 mm | 16 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00047195; 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, September and October. 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 USC00047195.
When is the last frost in Quincy?
In Quincy, the last spring frost (32°F) comes after May 22 in half of years and after June 14 in one year in ten; the first autumn frost comes before September 25 in half of years and before September 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
- May 221 year in 10 after June 14; 9 in 10 after May 3
- First autumn frost, half of years before
- September 251 year in 10 before September 4; 9 in 10 before October 9
NOAA puts the median frost-free season at 122 days, and the season without a hard freeze (28°F) at 163 days.
A hard freeze (28°F) comes after April 29 in half of springs and before October 9 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Quincy in zone 7b in ZIP code 95971, 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 7b: the coldest night of a typical year reaches 9°F (20 complete years).
Frost dates for every NOAA station in California · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00047195; 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, 56 days a year reach 90°F (5 of them 100°F or more), 143 nights fall to 32°F or colder and 84 days bring measurable precipitation.
- Days at 90°F or more
- 56a normal year
- Days at 100°F or more
- 5a normal year
- Nights at 32°F or colder
- 143a normal year
- Days that stay below freezing
- 1high of 32°F or less
- Days with 0.01 inch of precipitation
- 84a normal year
- Days with 1 inch of snow or more
- 10a normal year
The highest temperature in this station's record (since 1895) is 111°F, on July 31, 1994; the lowest is −24°F, on January 20, 1937.
The wettest calendar year on that record is 2017, with 71.98 in; the snowiest season is 1951–52, with 158.1 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00047195; records: ACIS (NOAA Regional Climate Centers), station USC00047195. Records use complete months only; a month missing more than three days is left out.
How sunny is Quincy?
Over a year 85% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Quincy, 5.1 kWh per square metre a day. July is the sunniest month (95%) and December the cloudiest (69%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 73% | 2.4 |
| February | 72% | 3.2 |
| March | 73% | 4.4 |
| April | 77% | 5.8 |
| May | 82% | 7.1 |
| June | 92% | 8.3 |
| July | 95% | 8.3 |
| August | 95% | 7.4 |
| September | 93% | 5.9 |
| October | 87% | 4.2 |
| November | 77% | 2.7 |
| December | 69% | 2.0 |
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 much heating and cooling does Quincy need?
A normal year in Quincy brings 5,728 heating degree days, 7% more than the median U.S. place (5,373), and 283 cooling degree days, 69% 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 2,100 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 944 | 0 |
| February | 756 | 0 |
| March | 694 | 0 |
| April | 536 | 0 |
| May | 328 | 7 |
| June | 135 | 37 |
| July | 25 | 129 |
| August | 37 | 87 |
| September | 139 | 22 |
| October | 440 | 1 |
| November | 740 | 0 |
| December | 955 | 0 |
| Year (annual) | 5,728 | 283 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00047195. 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 53.5°F, 3.5°F above the 1991-2020 normal of 50.0°F. 4 of the 4 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2021 | 52.7°F | +2.7°F | 36.48 | 57.5 |
| 2022 | 51.6°F | +1.6°F | 28.69 | – |
| 2023 | 50.9°F | +0.9°F | 48.87 | – |
| 2025 | 53.5°F | +3.5°F | 50.03 | – |
Over 67 complete years from 1896 to 2025, the station's annual mean temperature rose at a fitted 0.8°F per century (+0.04°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USC00047195; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Quincy's climate compare?
Quincy is warmer than 16 of the other 218 places with their own NOAA record in California, and wetter than 189. Across the 7,247 U.S. stations with normals, its annual mean of 50.0°F is warmer than 40%.
In the Köppen classification computed from these normals, Quincy 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 Quincy share this climate record?
10 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.
- East Quincy, CA2,198 people · 2 mi SE
- Meadow Valley, CA469 people · 7 mi W
- Twain, CA414 people · 8 mi NW
- Greenhorn, CA188 people · 10 mi E
- Keddie, CA61 people · 5 mi N
- Bucks Lake, CA20 people · 14 mi W
- Indian Falls, CA0 people · 9 mi N
- Paxton, CA0 people · 7 mi NW
- Spring Garden, CA0 people · 9 mi E
- Taylorsville, CA0 people · 10 mi NE
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 43°F and a normal low of 25°F. The warmest is July (89°F by day, 48°F at night).
Does it snow in Quincy?
Yes: 28 inches in a normal year, falling on 11 days with 0.1 inch or more, the most in February (7.6 inches).
What is the rainiest month in Quincy?
January, with 7.65 in of precipitation in a normal year; the driest is July with 0.10 in.
What plant hardiness zone is Quincy in?
The USDA's 2023 map puts Quincy in zone 7b in ZIP code 95971, the nearest ZIP area. By the same method at Quincy's NOAA station, the coldest night of a typical year reaches 9°F (20 years, 1991-2020): zone 7b.
How late can frost come in Quincy?
In half of years the last 32°F night comes after May 22; in one year in ten it comes after June 14. Waiting until June 14 leaves about a one-in-ten chance of a later frost.
Nearby and next
- California climateThe statewide normals and every place in the state
- Canyon Dam, CA18 miles from this station, 49.1°F a year
- Downieville, CA27 miles from this station, 53.1°F a year
- Portola, CA27 miles from this station, 46.7°F a year
- Strawberry Valley, CA27 miles from this station, 52.6°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made