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
Patchy Fog
Patchy fog and a chance of showers and thunderstorms before 1pm, then a chance of showers and thunderstorms. Mostly cloudy. High near 75, with temperatures falling to around 72 in the afternoon. West northwest wind around 8 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Bristow
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 75°F | Patchy Fog | 8 mph WNW | 54% |
| Tonight | 58°F | Chance Showers And Thunderstorms | 8 to 12 mph N | 31% |
| Sunday | 65°F | Chance Rain Showers then Slight Chance Drizzle | 12 to 15 mph NE | 29% |
| Sunday Night | 52°F | Chance Rain Showers | 12 mph ENE | 31% |
| Monday | 61°F | Chance Rain Showers | 13 mph ENE | 45% |
| Monday Night | 47°F | Chance Rain Showers | 6 to 10 mph ENE | 37% |
| Tuesday | 60°F | Mostly Sunny | 8 mph ENE | 14% |
| Tuesday Night | 43°F | Partly Cloudy | 2 to 6 mph ENE | 2% |
| Wednesday | 64°F | Sunny | 5 mph E | 1% |
| Wednesday Night | 48°F | Partly Cloudy | 2 mph ESE | 5% |
| Thursday | 65°F | Partly Sunny | 3 mph ESE | 10% |
| Thursday Night | 51°F | Mostly Cloudy | 2 mph ESE | 4% |
| Friday | 68°F | Mostly Sunny | 1 to 5 mph ESE | 4% |
| Friday Night | 52°F | Partly Cloudy | 3 mph SE | 10% |
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 Sep 19, 2026.