Newark, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Newark, a village in Lasalle County, Illinois.
Overnight
63°F
Mostly Clear
Mostly clear, with a low around 63. South wind around 5 mph.
7-day forecast for Newark
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 63°F | Mostly Clear | 5 mph S | 0% |
| Tuesday | 85°F | Mostly Sunny | 5 to 10 mph S | 2% |
| Tuesday Night | 68°F | Mostly Cloudy then Slight Chance Showers And Thunderstorms | 5 mph SSW | 24% |
| Wednesday | 80°F | Showers And Thunderstorms Likely | 5 mph WSW | 66% |
| Wednesday Night | 65°F | Showers And Thunderstorms | 5 mph NNW | 88% |
| Thursday | 80°F | Chance Showers And Thunderstorms | 5 mph ESE | 64% |
| Thursday Night | 63°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph SSE | 25% |
| Friday | 82°F | Mostly Sunny | 0 mph | 6% |
| Friday Night | 64°F | Mostly Clear | 0 to 5 mph S | 9% |
| Saturday | 84°F | Mostly Sunny | 5 mph SSW | 11% |
| Saturday Night | 70°F | Mostly Clear then Slight Chance Showers And Thunderstorms | 5 to 10 mph SSW | 15% |
| Sunday | 86°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 10 to 15 mph SW | 15% |
| Sunday Night | 70°F | Chance Showers And Thunderstorms | 10 mph SSW | 33% |
| Monday | 86°F | Chance Rain Showers then Slight Chance Showers And Thunderstorms | 5 to 10 mph SSW | 33% |
Forecast source: National Weather Service (api.weather.gov) for Newark (41.537, -88.581). Updated through the day.
Growing snapshot for Newark
Last spring frost
Apr 28
First fall frost
Oct 13
Growing season
166 days
Hardiness zone
5b
More local growing data for Newark: nearby ZIP 60537 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Cedar Point
Dana
Dayton
Earlville
Grand Ridge
Harding
Kangley
LaSalle
Leland
Leonore
Lostant
Marseilles
Mendota
Millington
Naplate
North Utica
Oglesby
Ottawa
Peru
Ransom
Rutland
Seneca
Serena
Sheridan
Streator
Tonica
Triumph
Troy Grove
Wedron
Wenona
Climate data from the nearest NOAA station, Chicago Aurora Muni Ap, Il (15.8 mi from Newark). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.