Newark, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Newark, a village in Lasalle County, Illinois.
This Afternoon
69°F
Rain Showers Likely
Rain showers likely. Mostly cloudy. High near 69, with temperatures falling to around 66 in the afternoon. South southeast wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Newark
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 69°F | Rain Showers Likely | 15 mph SSE | 62% |
| Tonight | 58°F | Rain Showers | 15 mph S | 89% |
| Wednesday | 61°F | Chance Rain Showers | 15 mph SSW | 46% |
| Wednesday Night | 48°F | Mostly Cloudy | 15 mph SW | 13% |
| Thursday | 57°F | Chance Rain Showers | 10 to 15 mph WSW | 35% |
| Thursday Night | 43°F | Chance Rain Showers | 5 to 10 mph WNW | 37% |
| Friday | 53°F | Slight Chance Rain Showers | 10 mph N | 22% |
| Friday Night | 36°F | Partly Cloudy | 5 to 10 mph NNW | 2% |
| Saturday | 52°F | Mostly Sunny | 5 mph WNW | 4% |
| Saturday Night | 35°F | Partly Cloudy | 0 to 5 mph WSW | 3% |
| Sunday | 57°F | Mostly Sunny | 5 to 10 mph W | 13% |
| Sunday Night | 35°F | Mostly Clear | 5 mph WNW | 6% |
| Monday | 62°F | Sunny | 5 to 10 mph WSW | 3% |
| Monday Night | 40°F | Mostly Clear | 5 to 10 mph WSW | 1% |
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 Nov 4, 2026.