Hamlet, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Hamlet, a community in Mercer County, Illinois.
This Afternoon
68°F
Showers And Thunderstorms Likely
Showers and thunderstorms likely. Cloudy, with a high near 68. South wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast for Hamlet
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 68°F | Showers And Thunderstorms Likely | 15 mph S | 64% |
| Tonight | 51°F | Showers And Thunderstorms Likely | 10 to 15 mph S | 70% |
| Wednesday | 55°F | Chance Rain Showers | 15 mph SW | 26% |
| Wednesday Night | 45°F | Mostly Cloudy then Slight Chance Rain Showers | 15 mph SW | 20% |
| Thursday | 54°F | Chance Rain Showers | 10 to 15 mph W | 38% |
| Thursday Night | 43°F | Chance Rain Showers then Mostly Cloudy | 5 to 10 mph NW | 27% |
| Friday | 52°F | Partly Sunny | 5 to 10 mph N | 11% |
| Friday Night | 35°F | Partly Cloudy | 0 to 5 mph N | 1% |
| Saturday | 53°F | Mostly Sunny | 0 to 5 mph W | 2% |
| Saturday Night | 36°F | Mostly Clear | 0 to 5 mph W | 3% |
| Sunday | 59°F | Sunny | 5 to 10 mph W | 10% |
| Sunday Night | 37°F | Mostly Clear | 5 mph W | 3% |
| Monday | 63°F | Sunny | 5 to 10 mph SW | 1% |
| Monday Night | 41°F | Mostly Clear | 5 to 10 mph W | 0% |
Forecast source: National Weather Service (api.weather.gov) for Hamlet (41.312, -90.733). Updated through the day.
Growing snapshot for Hamlet
Last spring frost
Apr 22
First fall frost
Oct 19
Growing season
181 days
Hardiness zone
5b
More local growing data for Hamlet: nearby ZIP 61279 weather · frost dates · planting calendar · Illinois frost dates
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Aledo
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New Boston
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Reynolds
Seaton
Sherrard
Viola
Windsor
Climate data from the nearest NOAA station, Aledo, Il (8.9 mi from Hamlet). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.