Neponset, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Neponset, a village in Bureau County, Illinois.
This Afternoon
75°F
Mostly Sunny
Mostly sunny, with a high near 75. Southeast wind around 10 mph.
7-day forecast for Neponset
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 75°F | Mostly Sunny | 10 mph SE | 12% |
| Tonight | 66°F | Mostly Cloudy then Chance Showers And Thunderstorms | 10 to 15 mph SE | 44% |
| Saturday | 82°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 10 mph S | 55% |
| Saturday Night | 65°F | Chance Showers And Thunderstorms then Showers And Thunderstorms | 5 mph N | 79% |
| Sunday | 72°F | Showers And Thunderstorms | 5 to 15 mph NE | 79% |
| Sunday Night | 58°F | Showers And Thunderstorms Likely | 15 mph NE | 64% |
| Monday | 65°F | Showers And Thunderstorms Likely | 15 mph NE | 62% |
| Monday Night | 53°F | Chance Rain Showers | 10 to 20 mph NE | 45% |
| Tuesday | 64°F | Chance Rain Showers | 15 mph NE | 43% |
| Tuesday Night | 50°F | Mostly Cloudy | 5 to 15 mph NE | 4% |
| Wednesday | 67°F | Mostly Sunny | 5 to 10 mph NE | 4% |
| Wednesday Night | 52°F | Partly Cloudy | 5 to 10 mph NE | 4% |
| Thursday | 69°F | Mostly Sunny | 5 mph N | 4% |
| Thursday Night | 54°F | Partly Cloudy | 0 to 5 mph NE | 5% |
Forecast source: National Weather Service (api.weather.gov) for Neponset (41.297, -89.790). Updated through the day.
Growing snapshot for Neponset
Last spring frost
Apr 24
First fall frost
Oct 17
Growing season
175 days
Hardiness zone
5b
More local growing data for Neponset: nearby ZIP 61345 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Arlington
Buda
Bureau Junction
Cherry
Dalzell
De Pue
Dover
Hollowayville
La Moille
Ladd
Malden
Manlius
Mineral
New Bedford
Ohio
Princeton
Seatonville
Sheffield
Spring Valley
Tiskilwa
Walnut
Wyanet
Climate data from the nearest NOAA station, Kewanee 1 E, Il (6.4 mi from Neponset). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.