Bristow, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Bristow, a city in Butler County, Iowa.
Today
75°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Mostly cloudy. High near 75, with temperatures falling to around 73 in the afternoon. West northwest wind around 8 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Bristow
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 75°F | Chance Showers And Thunderstorms | 8 mph WNW | 49% |
| Tonight | 58°F | Showers And Thunderstorms Likely | 3 to 7 mph NNW | 58% |
| Wednesday | 72°F | Slight Chance Showers And Thunderstorms then Partly Sunny | 3 mph NNE | 17% |
| Wednesday Night | 53°F | Mostly Clear | 2 mph NNW | 3% |
| Thursday | 77°F | Sunny | 0 to 3 mph SSW | 1% |
| Thursday Night | 59°F | Mostly Clear | 3 mph S | 0% |
| Friday | 81°F | Sunny | 2 to 10 mph S | 8% |
| Friday Night | 64°F | Mostly Clear | 7 mph S | 13% |
| Saturday | 84°F | Sunny | 5 to 9 mph S | 12% |
| Saturday Night | 68°F | Slight Chance Showers And Thunderstorms | 10 mph SE | 25% |
| Sunday | 85°F | Chance Showers And Thunderstorms then Mostly Sunny | 9 mph SSE | 25% |
| Sunday Night | 67°F | Slight Chance Showers And Thunderstorms | 8 mph SSE | 34% |
| Monday | 84°F | Chance Showers And Thunderstorms | 7 to 10 mph SSE | 34% |
| Monday Night | 68°F | Slight Chance Showers And Thunderstorms | 6 to 10 mph ENE | 36% |
Forecast source: National Weather Service (api.weather.gov) for Bristow (42.774, -92.908). Updated through the day.
Growing snapshot for Bristow
Last spring frost
Apr 27
First fall frost
Oct 8
Growing season
165 days
Hardiness zone
5a
More local growing data for Bristow: nearby ZIP 50611 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Allison, Ia (7.1 mi from Bristow). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.