Climate Quincy - Illinois
| JanJa | FebFe | MarMa | AprAp | MayMa | JunJu | |
|---|---|---|---|---|---|---|
| Average high in ºF Av. high Hi | 35 | 40 | 52 | 64 | 74 | 83 |
| Average low in ºF Av. low Lo | 19 | 23 | 32 | 43 | 54 | 63 |
| Av. precipitation in inch Av. precip. Pre. | 1.48 | 1.85 | 2.63 | 3.71 | 4.59 | 3.86 |
| JulJu | AugAu | SepSe | OctOc | NovNo | DecDe | |
|---|---|---|---|---|---|---|
| Average high in ºF Av. high Hi | 87 | 86 | 78 | 67 | 53 | 38 |
| Average low in ºF Av. low Lo | 67 | 66 | 56 | 45 | 35 | 23 |
| Av. precipitation in inch Av. precip. Pre. | 4.25 | 3.49 | 3.15 | 2.83 | 2.77 | 2.10 |
What is the average weather in Quincy, Illinois?
Quincy experiences a humid continental climate, marked by very strong seasonal temperature swings. Summers are hot, while winters are cold. The area is fairly wet overall, with precipitation spread relatively evenly throughout the year, though summer tends to be the wettest season.
Quincy Climate Graph - Illinois Climate Chart
Daily normals Quincy - Illinois - January
Day | High ºF | Low ºF | Prec/mo inch | Prec/yr inch | Snow/mo inch | Snow/yr inch |
|---|---|---|---|---|---|---|
| 1 Jan | 35.9 | 20.6 | 0.07 | 0.07 | 0.00 | 0.00 |
| 2 Jan | 35.7 | 20.4 | 0.13 | 0.13 | 0.00 | 0.00 |
| 3 Jan | 35.5 | 20.2 | 0.20 | 0.20 | 0.00 | 0.00 |
| 4 Jan | 35.4 | 20.0 | 0.26 | 0.26 | 0.00 | 0.00 |
| 5 Jan | 35.3 | 19.8 | 0.33 | 0.33 | 0.00 | 0.00 |
| 6 Jan | 35.1 | 19.6 | 0.39 | 0.39 | 0.00 | 0.00 |
| 7 Jan | 35.0 | 19.5 | 0.45 | 0.45 | 0.00 | 0.00 |
| 8 Jan | 34.9 | 19.3 | 0.51 | 0.51 | 0.00 | 0.00 |
| 9 Jan | 34.8 | 19.1 | 0.57 | 0.57 | 0.00 | 0.00 |
| 10 Jan | 34.8 | 19.0 | 0.64 | 0.64 | 0.00 | 0.00 |
| 11 Jan | 34.7 | 18.9 | 0.69 | 0.69 | 0.00 | 0.00 |
| 12 Jan | 34.6 | 18.7 | 0.74 | 0.74 | 0.00 | 0.00 |
| 13 Jan | 34.6 | 18.6 | 0.79 | 0.79 | 0.00 | 0.00 |
| 14 Jan | 34.6 | 18.5 | 0.85 | 0.85 | 0.00 | 0.00 |
| 15 Jan | 34.6 | 18.4 | 0.90 | 0.90 | 0.00 | 0.00 |
| 16 Jan | 34.6 | 18.4 | 0.95 | 0.95 | 0.00 | 0.00 |
| 17 Jan | 34.6 | 18.3 | 1.01 | 1.01 | 0.00 | 0.00 |
| 18 Jan | 34.6 | 18.3 | 1.06 | 1.06 | 0.00 | 0.00 |
| 19 Jan | 34.7 | 18.2 | 1.11 | 1.11 | 0.00 | 0.00 |
| 20 Jan | 34.7 | 18.2 | 1.16 | 1.16 | 0.00 | 0.00 |
| 21 Jan | 34.8 | 18.2 | 1.20 | 1.20 | 0.00 | 0.00 |
| 22 Jan | 34.9 | 18.2 | 1.25 | 1.25 | 0.00 | 0.00 |
| 23 Jan | 35.0 | 18.3 | 1.29 | 1.29 | 0.00 | 0.00 |
| 24 Jan | 35.1 | 18.3 | 1.34 | 1.34 | 0.00 | 0.00 |
| 25 Jan | 35.2 | 18.4 | 1.39 | 1.39 | 0.00 | 0.00 |
| 26 Jan | 35.3 | 18.4 | 1.43 | 1.43 | 0.00 | 0.00 |
| 27 Jan | 35.5 | 18.5 | 1.47 | 1.47 | 0.00 | 0.00 |
| 28 Jan | 35.6 | 18.6 | 1.52 | 1.52 | 0.00 | 0.00 |
| 29 Jan | 35.8 | 18.8 | 1.56 | 1.56 | 0.00 | 0.00 |
| 30 Jan | 36.0 | 18.9 | 1.61 | 1.61 | 0.00 | 0.00 |
| 31 Jan | 36.2 | 19.0 | 1.66 | 1.66 | 0.00 | 0.00 |
Weather history Quincy - September 2026
| Day | High ºF | Low ºF | Precip. inch | Snow inch | Snow d. inch |
|---|---|---|---|---|---|
| 01 Sep | 100.0 | 73.9 | 0.00 | - | - |
| 02 Sep | 100.9 | 73.9 | 0.00 | - | - |
| 03 Sep | 100.9 | 73.9 | 0.00 | - | - |
| 04 Sep | 102.0 | 77.0 | 0.00 | 0.00 | 0.0 |
| 05 Sep | 100.9 | 73.9 | 0.00 | 0.00 | 0.0 |
| 06 Sep | 96.1 | 73.9 | 0.00 | 0.00 | 0.0 |
| 07 Sep | 87.1 | 68.0 | 0.00 | - | - |
| 08 Sep | 88.0 | 66.9 | 0.00 | 0.00 | 0.0 |
| 09 Sep | 100.0 | 66.9 | 0.00 | 0.00 | 0.0 |
| 10 Sep | 77.0 | 69.1 | 0.55 | 0.00 | 0.0 |
| 11 Sep | 78.1 | 64.9 | 1.90 | - | - |
| 12 Sep | 78.1 | 64.9 | 0.00 | - | - |
| 13 Sep | 89.1 | 64.0 | 0.00 | - | - |
| 14 Sep | 82.9 | 60.1 | 0.05 | - | - |
| 15 Sep | - | - | - | - | - |
| 16 Sep | - | - | - | - | - |
| 17 Sep | - | - | - | - | - |
| 18 Sep | - | - | - | - | - |
| 19 Sep | - | - | - | - | - |
| 20 Sep | - | - | - | - | - |
| 21 Sep | - | - | - | - | - |
| 22 Sep | - | - | - | - | - |
| 23 Sep | - | - | - | - | - |
| 24 Sep | - | - | - | - | - |
| 25 Sep | - | - | - | - | - |
| 26 Sep | - | - | - | - | - |
| 27 Sep | - | - | - | - | - |
| 28 Sep | - | - | - | - | - |
| 29 Sep | - | - | - | - | - |
| 30 Sep | - | - | - | - | - |
Past weather Quincy
| Sep 26 | Normal | ||
|---|---|---|---|
| Average high temperature Av. high temp. | 91.5 ºF | 35 ºF | |
| Average low temperature Av. low temp. | 69.4 ºF | 19 ºF | |
| Total precipitation Total precip. | 2.50 inch | 1.48 inch | |
| Total snowfall Total snowfall | - inch | 0 inch | |
| Highest max temperature Highest max temp. | 102.0 ºF | - | |
| Lowest max temperature Lowest max temp. | 77.0 ºF | - | |
| Highest min temperature Highest min temp. | 77.0 ºF | - | |
| Lowest min temperature Lowest min temp. | 60.1 ºF | - | |
Past weather September 2026 incomplete - Missing data
Geo Quincy - Illinois
| Country | United States | |
|---|---|---|
| State | Illinois | |
| County | Adams | |
| City | Quincy | |
| Zip Code | 62301 | |
| Longitude | -91.41 dec. degr. | |
| Latitude | 39.94 dec. degr. | |
| Altitude - Elevation | 568ft | |
| ICAO | - | |
| IATA | - |
Date and Time Quincy - Illinois
| Local Time | 10:40 AM | |
|---|---|---|
| Sunrise | 06:48 AM | |
| Sunset | 07:10 PM | |
| Day/Night | Day | |
| Timezone | Central Daylight Time | |
| Timezone DB | America - Chicago |
Map of Quincy - Illinois
USGS National Map — Open interactive map
Quincy weather averages
| Annual high temperature | 63ºF |
| Annual low temperature | 44ºF |
| Average annual precip. | 36.71 inch |
Station Data
Monthly averages Quincy
Longitude: -91.4099, Latitude: 39.9356
Average weather Quincy, IL - 62301
Monthly: 1991-2020 normals
History: 2007-2026
Abbreviations
Average precipitation in : Av. precipitation in
Jan: January, Feb: February, ...Jan: January, Feb: February, ...Ja: January, Fe: February, ...