Cairo, OH Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Cairo, a village in Allen County, Ohio.
Overnight
55°F
Clear
Clear, with a low around 55. Southeast wind around 5 mph.
7-day forecast for Cairo
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 55°F | Clear | 5 mph SE | 0% |
| Tuesday | 83°F | Sunny | 0 mph | 0% |
| Tuesday Night | 61°F | Mostly Clear | 0 mph | 0% |
| Wednesday | 86°F | Sunny | 0 to 5 mph SW | 0% |
| Wednesday Night | 65°F | Mostly Clear | 0 to 5 mph SW | 4% |
| Thursday | 85°F | Mostly Sunny then Chance Showers And Thunderstorms | 5 to 10 mph SW | 53% |
| Thursday Night | 66°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 5 mph SW | 69% |
| Friday | 83°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 5 mph SW | 68% |
| Friday Night | 65°F | Chance Showers And Thunderstorms | 5 mph SW | 51% |
| Saturday | 84°F | Partly Sunny then Slight Chance Showers And Thunderstorms | 5 to 10 mph SW | 16% |
| Saturday Night | 66°F | Slight Chance Showers And Thunderstorms | 5 to 10 mph SW | 17% |
| Sunday | 87°F | Slight Chance Rain Showers then Mostly Sunny | 5 to 15 mph SW | 17% |
| Sunday Night | 69°F | Chance Showers And Thunderstorms | 10 to 15 mph SW | 34% |
| Monday | 87°F | Chance Rain Showers | 10 to 15 mph SW | 34% |
Forecast source: National Weather Service (api.weather.gov) for Cairo (40.831, -84.084). Updated through the day.
Growing snapshot for Cairo
Last spring frost
Apr 24
First fall frost
Oct 24
Growing season
182 days
More local growing data for Cairo: nearby ZIP 45820 weather · frost dates · planting calendar · Ohio frost dates
Nearby towns & communities
Beaverdam
Bluffton
Cridersville
Delphos
Elida
Fort Shawnee
Gomer
Harrod
Lafayette
Lima
Spencerville
Westminster
Climate data from the nearest NOAA station, Lima Wwtp, Oh (7.7 mi from Cairo). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.