Green Bay weather in October: Green Bay, Wisconsin: normal highs, lows, rain and records for October
Green Bay in October has a normal high of 58°F and a normal low of 40°F, a daily mean of 49°F, falling from 65°F on the 1st to 51°F by the 31st. Measurable precipitation falls on 10 days in a normal October, 2.67 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 14°C and low of 4°C, 68 mm of precipitation and 1 cm of snow in October.
- NOAA stationGreen Bay A S International Airport
- Station IDUSW00014898
- Location44.50°N 88.11°W
- Elevation682 ft (208 m)
- From the center6 miles
- Population106,311
- Jan 26° 11°
- Feb 29° 13°
- Mar 40° 24°
- Apr 54° 35°
- May 67° 46°
- Jun 77° 56°
- Jul 81° 60°
- Aug 79° 58°
- Sep 72° 50°
- Oct 58° 40°
- Nov 44° 29°
- Dec 31° 18°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Green Bay in October?
The normal high is 58°F and the normal low 40°F, for a daily mean of 48.7°F. October is 12.3°F cooler than September and 12.5°F warmer than November. October is the 6th warmest month of the year in Green Bay and the 7th wettest. Across the month the normal high falls 14°F, from 65°F on October 1 to 51°F on October 31. From one year to the next October's mean temperature typically moves about 2.8°F either way (NOAA's standard deviation), so roughly two Octobers in three average between 46°F and 52°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 35%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| October 1 | 65°F | 45°F | 35% | 20% |
| October 8 | 62°F | 42°F | 34% | 19% |
| October 15 | 58°F | 40°F | 33% | 18% |
| October 22 | 55°F | 38°F | 32% | 18% |
| October 31 | 51°F | 35°F | 31% | 16% |
Every day of October: normal high, low and chance of precipitation (warmest afternoon October 1, coldest night October 31)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| October 1 | 65°F | 45°F | 35% | 20% | 11 h 50 min |
| October 2 | 65°F | 44°F | 35% | 20% | 11 h 40 min |
| October 3 | 64°F | 44°F | 34% | 20% | 11 h 40 min |
| October 4 | 64°F | 43°F | 34% | 20% | 11 h 40 min |
| October 5 | 63°F | 43°F | 34% | 20% | 11 h 30 min |
| October 6 | 63°F | 43°F | 34% | 20% | 11 h 30 min |
| October 7 | 62°F | 42°F | 34% | 19% | 11 h 30 min |
| October 8 | 62°F | 42°F | 34% | 19% | 11 h 30 min |
| October 9 | 61°F | 42°F | 34% | 19% | 11 h 20 min |
| October 10 | 61°F | 41°F | 34% | 19% | 11 h 20 min |
| October 11 | 60°F | 41°F | 34% | 19% | 11 h 20 min |
| October 12 | 60°F | 41°F | 34% | 19% | 11 h 10 min |
| October 13 | 59°F | 40°F | 34% | 19% | 11 h 10 min |
| October 14 | 59°F | 40°F | 33% | 19% | 11 h 10 min |
| October 15 | 58°F | 40°F | 33% | 18% | 11 h |
| October 16 | 58°F | 40°F | 33% | 18% | 11 h |
| October 17 | 58°F | 39°F | 33% | 18% | 11 h |
| October 18 | 57°F | 39°F | 33% | 18% | 11 h |
| October 19 | 57°F | 39°F | 33% | 18% | 10 h 50 min |
| October 20 | 56°F | 38°F | 33% | 18% | 10 h 50 min |
| October 21 | 56°F | 38°F | 33% | 18% | 10 h 50 min |
| October 22 | 55°F | 38°F | 32% | 18% | 10 h 40 min |
| October 23 | 55°F | 37°F | 32% | 18% | 10 h 40 min |
| October 24 | 54°F | 37°F | 32% | 17% | 10 h 40 min |
| October 25 | 54°F | 37°F | 32% | 17% | 10 h 30 min |
| October 26 | 53°F | 36°F | 32% | 17% | 10 h 30 min |
| October 27 | 53°F | 36°F | 32% | 17% | 10 h 30 min |
| October 28 | 52°F | 36°F | 32% | 17% | 10 h 30 min |
| October 29 | 52°F | 35°F | 31% | 17% | 10 h 20 min |
| October 30 | 51°F | 35°F | 31% | 17% | 10 h 20 min |
| October 31 | 51°F | 35°F | 31% | 16% | 10 h 20 min |
- Normal high
- 58°FOctober average
- Normal low
- 40°FOctober average
- Precipitation
- 2.67 inmonth total
- Days with precipitation
- 100.01 inch or more
- Snowfall
- 0.3 inmonth total
- Nights at 32°F or colder
- 8
- Daylight
- 11 h 50 min to 10 h 20 minOctober 1 to October 31
- Days at 70°F or more
- 5
- Days at 80°F or more
- 1
- Sunshine
- 68%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00014898; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain or snow in Green Bay in October?
On a given October day the chance of 0.01 inch or more is 33% on average, highest around October 1 (35%). In all, 2.67 in falls on 10 days of a normal October, 1 of them with an inch or more.
In a normal October in Green Bay, 8 nights fall to freezing and snowfall averages 0.3 inches.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00014898.
How humid and windy is Green Bay in October?
At 3 p.m. the normal temperature is 49°F with 58% relative humidity and a dew point of 35°F; at 6 a.m. it is 38°F with 82% humidity. The wind averages 9.0 mph, most often from the west-southwest in the afternoon. A dew point under 50°F feels dry.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 38°F | 33°F | 82% | 7.9 mph | 47% |
| 9 a.m. | 43°F | 35°F | 74% | 10.4 mph | 42% |
| noon | 48°F | 35°F | 61% | 12.0 mph | 42% |
| 3 p.m. | 49°F | 35°F | 58% | 11.2 mph | 39% |
| 6 p.m. | 43°F | 34°F | 70% | 8.0 mph | 46% |
| 9 p.m. | 41°F | 34°F | 75% | 7.9 mph | 48% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00014898. Hourly normals exist only for NOAA's first-order stations; a dash where NOAA publishes no value for that hour (the sky at some hours).
What are the records for October in Green Bay?
The warmest October temperature on Green Bay's official record (since 1886) is 88°F, on October 6, 1963; the coldest is 8°F, on October 25, 1887. The wettest October brought 5.40 in (1886); the snowiest, 10.3 inches (1887).
The October mean against the 1991-2020 normal of 48.7°F: 2021 55.3°F (+6.6), 2022 51.1°F (+2.4), 2023 51.1°F (+2.4), 2024 54.1°F (+5.4), 2025 52.9°F (+4.1). 5 of 5 ran warmer than normal.
| October | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 55.3°F | +6.6°F | 1.15 in |
| 2022 | 51.1°F | +2.4°F | 1.55 in |
| 2023 | 51.1°F | +2.4°F | 3.65 in |
| 2024 | 54.1°F | +5.4°F | 2.05 in |
| 2025 | 52.9°F | +4.1°F | 1.69 in |
Source: records: ACIS, NWS threaded record GRBthr; recent months: ACIS, station USW00014898. Records and recent months use complete months only.
How does October in Green Bay compare across Wisconsin?
Across the 165 places PlainClimate covers in Wisconsin, October normal highs run from 52°F in Laona to 63°F in Lake Geneva; Green Bay's is 58°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.
Other months and places
- Green Bay in September72°F by day, 50°F at night
- Green Bay in November44°F by day, 29°F at night
- Green Bay through the yearEvery month, frost dates, records and recent years
- Wisconsin in OctoberThe statewide normal and the warmest and coolest places
- Lake Geneva: Wisconsin's warmest Octobernormal high 63°F