Blue Grass, IA Weather & Growing Conditions
Today
83°F
Patchy Fog
Patchy fog and occasional showers and thunderstorms before 1pm, then a chance of showers and thunderstorms between 1pm and 4pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 83. Southeast wind 5 to 10 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 83°F | Patchy Fog | 5 to 10 mph SE | 87% |
| Tonight | 64°F | Chance Showers And Thunderstorms then Showers And Thunderstorms | 5 to 10 mph W | 86% |
| Sunday | 70°F | Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 10 to 15 mph NE | 77% |
| Sunday Night | 58°F | Chance Showers And Thunderstorms | 10 to 15 mph NE | 48% |
| Monday | 64°F | Chance Rain Showers | 15 mph NE | 54% |
| Monday Night | 53°F | Chance Rain Showers | 10 to 15 mph NE | 45% |
| Tuesday | 63°F | Slight Chance Rain Showers | 10 to 15 mph NE | 20% |
| Tuesday Night | 49°F | Partly Cloudy | 5 to 10 mph NE | 5% |
| Wednesday | 67°F | Mostly Sunny | 5 to 10 mph NE | 1% |
| Wednesday Night | 53°F | Partly Cloudy | 0 to 5 mph NE | 1% |
| Thursday | 68°F | Mostly Sunny | 5 mph NE | 4% |
| Thursday Night | 55°F | Partly Cloudy | 0 to 5 mph NE | 4% |
| Friday | 71°F | Mostly Sunny | 5 mph NE | 3% |
| Friday Night | 55°F | Partly Cloudy | 0 to 5 mph E | 5% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Blue Grass, IA
Last spring frost
Apr 19
First fall frost
Oct 22
Growing season
184 days
Hardiness zone
5b
Explore more for Blue Grass, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Rock Island L&D 15, Il (11.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.