Waterman, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Waterman, a village in Dekalb County, Illinois.
Today
83°F
Mostly Sunny
Mostly sunny, with a high near 83. South southwest wind 5 to 10 mph, with gusts as high as 20 mph.
7-day forecast for Waterman
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 83°F | Mostly Sunny | 5 to 10 mph SSW | 0% |
| Tonight | 66°F | Mostly Cloudy then Slight Chance Showers And Thunderstorms | 5 mph SW | 38% |
| Wednesday | 78°F | Showers And Thunderstorms Likely | 5 mph WSW | 73% |
| Wednesday Night | 63°F | Showers And Thunderstorms | 5 mph NNW | 85% |
| Thursday | 79°F | Rain Showers Likely then Slight Chance Showers And Thunderstorms | 5 mph ENE | 57% |
| Thursday Night | 61°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph SE | 20% |
| Friday | 81°F | Mostly Sunny | 0 to 5 mph SE | 7% |
| Friday Night | 63°F | Mostly Clear | 0 to 5 mph SSW | 9% |
| Saturday | 83°F | Mostly Sunny | 5 to 10 mph SSW | 9% |
| Saturday Night | 68°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 5 to 10 mph SSW | 18% |
| Sunday | 85°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 10 to 15 mph SW | 18% |
| Sunday Night | 68°F | Chance Showers And Thunderstorms | 10 mph SSW | 36% |
| Monday | 85°F | Chance Rain Showers then Slight Chance Showers And Thunderstorms | 5 to 10 mph SSW | 35% |
| Monday Night | 68°F | Chance Showers And Thunderstorms | 10 mph W | 42% |
Forecast source: National Weather Service (api.weather.gov) for Waterman (41.766, -88.763). Updated through the day.
Growing snapshot for Waterman
Last spring frost
Apr 28
First fall frost
Oct 10
Growing season
163 days
Hardiness zone
5b
More local growing data for Waterman: nearby ZIP 60556 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Cortland
DeKalb
Genoa
Hinckley
Kingston
Kirkland
Lake Holiday
Malta
Sandwich
Shabbona
Somonauk
Sycamore
Climate data from the nearest NOAA station, Shabbona 5 Nne, Il (6.9 mi from Waterman). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.