Olmsted, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Olmsted, a village in Pulaski County, Illinois.
Overnight
65°F
Patchy Fog
Patchy fog. Mostly clear. Low around 65, with temperatures rising to around 67 overnight. North northeast wind around 1 mph.
7-day forecast for Olmsted
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 65°F | Patchy Fog | 1 mph NNE | 0% |
| Tuesday | 87°F | Patchy Fog then Sunny | 2 mph NE | 0% |
| Tuesday Night | 65°F | Mostly Clear | 1 mph ENE | 0% |
| Wednesday | 89°F | Sunny | 0 mph | 0% |
| Wednesday Night | 69°F | Mostly Clear | 1 mph SSE | 0% |
| Thursday | 89°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 1 to 5 mph SSW | 16% |
| Thursday Night | 71°F | Chance Showers And Thunderstorms | 2 mph S | 50% |
| Friday | 88°F | Chance Showers And Thunderstorms | 5 mph SSW | 50% |
| Friday Night | 71°F | Chance Showers And Thunderstorms | 2 mph SW | 42% |
| Saturday | 89°F | Chance Showers And Thunderstorms | 3 mph SSW | 34% |
| Saturday Night | 71°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 1 mph S | 23% |
| Sunday | 90°F | Mostly Sunny | 2 to 6 mph SSW | 10% |
| Sunday Night | 72°F | Mostly Clear | 1 to 5 mph SSW | 8% |
| Monday | 91°F | Sunny | 2 to 6 mph SSW | 5% |
Forecast source: National Weather Service (api.weather.gov) for Olmsted (37.182, -89.084). Updated through the day.
Growing snapshot for Olmsted
Last spring frost
Apr 3
First fall frost
Nov 5
Growing season
216 days
Hardiness zone
7a
More local growing data for Olmsted: nearby ZIP 62970 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Grand Chain Dam 53, Il (3.9 mi from Olmsted). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.