Olmsted, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Olmsted, a village in Pulaski County, Illinois.
This Afternoon
78°F
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms after 5pm. Partly sunny. High near 78, with temperatures falling to around 74 in the afternoon. South southeast wind 15 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 20%.
7-day forecast for Olmsted
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 78°F | Slight Chance Showers And Thunderstorms | 15 to 18 mph SSE | 16% |
| Tonight | 57°F | Showers And Thunderstorms | 6 to 13 mph S | 99% |
| Wednesday | 69°F | Partly Sunny | 3 to 9 mph WSW | 8% |
| Wednesday Night | 44°F | Mostly Clear | 2 mph WSW | 0% |
| Thursday | 69°F | Sunny | 1 to 6 mph SW | 0% |
| Thursday Night | 45°F | Partly Cloudy | 2 mph W | 4% |
| Friday | 63°F | Partly Sunny | 2 to 8 mph NNW | 1% |
| Friday Night | 40°F | Partly Cloudy | 5 mph NNW | 1% |
| Saturday | 59°F | Mostly Sunny | 3 mph N | 0% |
| Saturday Night | 35°F | Partly Cloudy | 0 mph | 1% |
| Sunday | 62°F | Sunny | 0 to 5 mph WNW | 5% |
| Sunday Night | 35°F | Mostly Clear | 1 mph NW | 6% |
| Monday | 65°F | Sunny | 1 to 6 mph W | 1% |
| Monday Night | 38°F | Mostly Clear | 2 mph W | 0% |
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 Nov 3, 2026.