Green Bay, WI weather in October
Expect cool weather with frequent rain in Green Bay in October, with highs near 58°F and lows near 40°F. Rain falls on about 10 days.
- Normal high
- 58°F
- Normal low
- 40°F
- Wet days
- 10
- 2.7 in total
- Muggy days
- 0
- dew point 65°F+
How October changes from start to finish
| October 1 | October 31 | |
|---|---|---|
| Normal high | 65°F | 51°F |
| Normal low | 45°F | 35°F |
| Chance of a wet day | 34% | 32% |
| Sunrise / sunset | 6:50 am / 6:33 pm | 7:28 am / 5:42 pm |
| Daylight | 11.7 h | 10.2 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Central Time).
A typical October day
- 6 am43°Fdew point 39°F
- 9 am50°Fdew point 41°F
- Noon55°Fdew point 41°F
- 3 pm56°Fdew point 41°F
- 6 pm50°Fdew point 41°F
- 9 pm47°Fdew point 40°F
NOAA hourly normals (local standard time) from Green Bay (5 mi away); average wind 9 mph; clear or few clouds in 50% of daytime hours, mostly cloudy or overcast in 44%.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F7 of 31
- Beach dayshigh 80-95°F, under 0.05 in of rain, afternoon wind under 15 mph1 of 31
- Hot dayshigh 90°F or more0 of 31
- Muggy daysdaily mean dew point 65°F or more0 of 31
- Wet daysat least 0.01 in of rain or melted snow10 of 31
- Notable rainat least 0.10 in6 of 31
- Freezing nightslow 32°F or below8 of 31
- Snow on the groundsnow depth 1 in or more0 of 31
Average days per October, counted from daily records for each year 1991-2020.
Rain and snow in October
Normal precipitation is 2.7 in; a dry October brings about 1.6 in and a wet one about 3.6 in (25th and 75th percentiles). About 2 days bring half an inch or more, and about 1 an inch or more. Normal snowfall is 0.3 in.
How October varies from year to year
- Warmest October, 1991-20202007: average high 64°F
- Coolest October2009: average high 51°F
- Wettest October2009: 5.2 in
- Driest October2000: 0.5 in
- Highest reading87°F (October 6, 2007)
- Lowest reading20°F (October 22, 1997)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
October compared with September and November
| September | October | November | |
|---|---|---|---|
| Normal high | 72°F | 58°F | 44°F |
| Normal low | 50°F | 40°F | 29°F |
| Wet days | 10 | 10 | 10 |
| Comfortable days | 15 | 7 | 1 |
| Daylight | 12.5 h | 11.0 h | 9.6 h |
Highs change by -14°F from September and -14°F into November.
Nearby alternatives in October
- Warmer: Chicago, IL185 mi · high 64°F · 11 wet days
How Green Bay ranks in October
- Normal high345th warmest of 378 cities; 4th of 5 in Wisconsin
- Wet days298th driest of 378
- Comfortable days274th most of 340
What to pack for Green Bay in October
- A warm jacket – lows near 40°F, highs near 58°F
- A rain jacket or umbrella – rain on about 10 days
Frost in October
The first fall frost typically comes around Oct 9; in 1 year in 10 it comes before Sep 24. All frost dates for Green Bay.
Heating and cooling
October has 507 heating degree days and 4 cooling degree days (base 65°F), 6% of the year's total heating and cooling demand.
Questions
How cold is Green Bay in October?
The normal high is 58°F and the normal low is 40°F. From 1991 to 2020 the coldest October reading was 20°F (October 22, 1997).
Does it rain a lot in Green Bay in October?
About 10 days in October have at least 0.01 in of precipitation, and the normal total is 2.7 in. The wettest October in 1991-2020 was in 2009 (5.2 in); the driest was in 2000 (0.5 in).
Does it snow in Green Bay in October?
Yes. Normal snowfall in October is 0.3 in.
Is October a good time to visit Green Bay?
October ranks 7th of 12 months on our comfort score for Green Bay (54 out of 100). It has about 7 comfortable days. The best months are May, June and September.
Where the numbers come from
- Temperature, rain, snowfall, snow depth, frost dates, humidity and wind by hour and cloud cover: Green Bay (USW00014898), 4.7 mi WSW of the city center, 682 ft (89 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Austin Straubel International Airport (726450-14898), 6.4 mi WSW of the city center, 684 ft (91 ft higher than the city). Hourly observations, 1991-2020.