Buffalo, IL Weather & Growing Conditions
Overnight
56°F
Slight Chance Light Rain
A slight chance of rain. Mostly cloudy, with a low around 56. South southwest wind around 13 mph, with gusts as high as 21 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 56°F | Slight Chance Light Rain | 13 mph SSW | 21% |
| Wednesday | 59°F | Slight Chance Drizzle | 12 to 15 mph SW | 11% |
| Wednesday Night | 44°F | Slight Chance Drizzle then Mostly Cloudy | 12 mph WSW | 10% |
| Thursday | 61°F | Mostly Cloudy | 10 to 15 mph WSW | 10% |
| Thursday Night | 44°F | Mostly Cloudy | 5 to 9 mph NW | 6% |
| Friday | 53°F | Partly Sunny | 13 mph NNW | 4% |
| Friday Night | 33°F | Partly Cloudy | 2 to 9 mph NNW | 0% |
| Saturday | 53°F | Sunny | 2 to 6 mph NNW | 0% |
| Saturday Night | 33°F | Partly Cloudy | 3 mph NW | 1% |
| Sunday | 58°F | Sunny | 2 to 8 mph WNW | 1% |
| Sunday Night | 34°F | Clear | 1 to 5 mph W | 1% |
| Monday | 63°F | Sunny | 1 to 8 mph SW | 0% |
| Monday Night | 39°F | Clear | 6 mph SW | 0% |
| Tuesday | 66°F | Sunny | 6 mph WNW | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Buffalo, IL
Last spring frost
Apr 14
First fall frost
Oct 20
Growing season
187 days
Hardiness zone
6a
Explore more for Buffalo, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Springfield Capital Ap, Il (16.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.