Spring Valley, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Spring Valley, a city in Bureau County, Illinois.
This Afternoon
75°F
Slight Chance Rain Showers
A slight chance of rain showers before 5pm. Mostly sunny, with a high near 75. East southeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Spring Valley
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 75°F | Slight Chance Rain Showers | 10 mph ESE | 24% |
| Tonight | 66°F | Mostly Cloudy then Chance Showers And Thunderstorms | 5 to 10 mph E | 29% |
| Saturday | 82°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 5 mph SSE | 57% |
| Saturday Night | 66°F | Chance Showers And Thunderstorms then Showers And Thunderstorms | 5 mph NNW | 78% |
| Sunday | 73°F | Rain Showers | 5 to 15 mph NNE | 78% |
| Sunday Night | 57°F | Showers And Thunderstorms | 10 to 15 mph NE | 77% |
| Monday | 66°F | Showers And Thunderstorms Likely | 15 mph ENE | 63% |
| Monday Night | 53°F | Chance Rain Showers | 10 to 15 mph NE | 40% |
| Tuesday | 65°F | Chance Rain Showers | 10 to 15 mph NE | 31% |
| Tuesday Night | 51°F | Mostly Cloudy | 5 to 15 mph NNE | 7% |
| Wednesday | 68°F | Partly Sunny | 5 to 10 mph NNE | 5% |
| Wednesday Night | 52°F | Partly Cloudy | 5 to 10 mph NNE | 5% |
| Thursday | 70°F | Mostly Sunny | 5 mph NNE | 3% |
| Thursday Night | 54°F | Partly Cloudy | 0 to 5 mph NNE | 4% |
Forecast source: National Weather Service (api.weather.gov) for Spring Valley (41.323, -89.183). Updated through the day.
Growing snapshot for Spring Valley
Last spring frost
Apr 24
First fall frost
Oct 18
Growing season
176 days
Hardiness zone
5b
More local growing data for Spring Valley: nearby ZIP 61320 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Arlington
Buda
Bureau Junction
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La Moille
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Malden
Manlius
Mineral
Neponset
New Bedford
Ohio
Princeton
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Tiskilwa
Walnut
Wyanet
Climate data from the nearest NOAA station, Peru, Il (3.3 mi from Spring Valley). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.