Climate averages 1991–2020
Green Bay weather
in October.
A cool, moderately wet month: the 6th warmest and the 7th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
October is a cool month in Green Bay: daytime highs average 14.0°C and nights cool to about 6.6°C. By daytime temperature it is the 6th warmest of the 12 months.
Expect about 71 mm of rain on roughly 10 days, which makes October a moderately wet month (the 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 02 min on an average October day.
The nearest other city in this atlas is Appleton (42 km away). In October its highs average 13.7°C, about as warm as Green Bay, with 72 mm of rain.
Among the 498 cities listed in the United States, Green Bay ranks joint 484th of 498 for the warmest October highs and joint 212th of 498 for the driest October (rainfall, lowest first). The mean October high of those 498 cities is 21.4°C; Green Bay is 7.4°C cooler than that mean.
From October to November, average highs fall by 7.8°C to 6.1°C, and monthly rainfall falls from 71 mm to 54 mm.
The annual picture
October in context
Monthly precipitation
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Green Bay climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | -4.1°C-11.9°C | -11.9°C | 37 | 7.6 | 9.29 h |
| February | -2.3°C-10.8°C | -10.8°C | 33 | 6.5 | 10.410 h |
| March | 4.2°C-5.1°C | -5.1°C | 56 | 8.3 | 11.912 h |
| April | 11.3°C1.6°C | 1.6°C | 80 | 11.4 | 13.413 h |
| May | 18.5°C8.7°C | 8.7°C | 86 | 11.4 | 14.815 h |
| June | 24.1°C14.9°C | 14.9°C | 91 | 11.2 | 15.515 h |
| July | 26.7°C17.8°C | 17.8°C | 88 | 11.2 | 15.215 h |
| August | 25.6°C17.3°C | 17.3°C | 87 | 10.4 | 14.014 h |
| September | 21.5°C13.3°C | 13.3°C | 67 | 9.1 | 12.613 h |
| October, selected | 14.0°C6.6°C | 6.6°C | 71 | 9.5 | 11.011 h |
| November | 6.1°C-0.4°C | -0.4°C | 54 | 8.2 | 9.610 h |
| December | -0.6°C-7.2°C | -7.2°C | 45 | 7.3 | 8.99 h |
Precipitation (rain or snow, as water) is the average of the 30 separate monthly totals. A wet day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
October in nearby cities
- Appleton in OctoberUnited States · 42 kmHigh 13.7°C · Low 6.3°C · 72 mm rain
- Milwaukee in OctoberUnited States · 165 kmHigh 14.0°C · Low 9.5°C · 78 mm rain
- Waukesha in OctoberUnited States · 168 kmHigh 14.9°C · Low 7.6°C · 72 mm rain
- Madison in OctoberUnited States · 195 kmHigh 14.8°C · Low 6.4°C · 72 mm rain
- Racine in OctoberUnited States · 200 kmHigh 14.2°C · Low 10.2°C · 92 mm rain
- Kenosha in OctoberUnited States · 216 kmHigh 14.3°C · Low 10.3°C · 96 mm rain
- Waukegan in OctoberUnited States · 240 kmHigh 14.5°C · Low 10.3°C · 101 mm rain
- Grand Rapids in OctoberUnited States · 256 kmHigh 15.0°C · Low 7.5°C · 86 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Green Bay) is explained once on the Green Bay year overview and on the Sources, method and limits page.