Bristow, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Bristow, a city in Butler County, Iowa.
This Afternoon
65°F
Showers And Thunderstorms Likely
Showers and thunderstorms likely. Cloudy. High near 65, with temperatures falling to around 60 in the afternoon. West northwest wind 6 to 12 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Bristow
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 65°F | Showers And Thunderstorms Likely | 6 to 12 mph WNW | 69% |
| Tonight | 46°F | Showers And Thunderstorms Likely | 6 to 9 mph NW | 65% |
| Wednesday | 51°F | Rain Showers Likely | 10 to 16 mph W | 56% |
| Wednesday Night | 42°F | Rain Showers Likely | 9 to 13 mph W | 61% |
| Thursday | 50°F | Rain Showers Likely | 12 mph NW | 68% |
| Thursday Night | 36°F | Slight Chance Rain Showers then Mostly Cloudy | 6 to 9 mph N | 17% |
| Friday | 48°F | Partly Sunny | 2 to 8 mph N | 2% |
| Friday Night | 30°F | Partly Cloudy | 1 mph N | 1% |
| Saturday | 53°F | Mostly Sunny | 0 to 5 mph WSW | 2% |
| Saturday Night | 34°F | Mostly Clear | 3 mph W | 4% |
| Sunday | 58°F | Sunny | 3 to 7 mph WNW | 6% |
| Sunday Night | 36°F | Mostly Clear | 5 mph SW | 2% |
| Monday | 61°F | Mostly Sunny | 5 to 10 mph SW | 0% |
| Monday Night | 39°F | Mostly Clear | 6 mph WNW | 1% |
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 Nov 3, 2026.