Blackwater, AZ Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Blackwater, a community in Pinal County, Arizona.
Tonight
73°F
Mostly Clear
Mostly clear, with a low around 73. South wind 0 to 5 mph.
7-day forecast for Blackwater
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 73°F | Mostly Clear | 0 to 5 mph S | 0% |
| Saturday | 99°F | Sunny | 0 to 5 mph S | 0% |
| Saturday Night | 72°F | Mostly Clear | 0 to 5 mph SE | 0% |
| Sunday | 98°F | Sunny | 5 mph SSE | 0% |
| Sunday Night | 75°F | Partly Cloudy | 5 mph ESE | 0% |
| Monday | 98°F | Mostly Sunny | 5 mph SSE | 2% |
| Monday Night | 75°F | Mostly Clear | 0 to 5 mph S | 9% |
| Tuesday | 98°F | Sunny | 0 to 5 mph SSE | 9% |
| Tuesday Night | 77°F | Partly Cloudy | 5 to 10 mph ENE | 8% |
| Wednesday | 99°F | Mostly Sunny | 5 to 10 mph E | 9% |
| Wednesday Night | 78°F | Partly Cloudy | 5 to 15 mph E | 14% |
| Thursday | 98°F | Slight Chance Showers And Thunderstorms | 5 to 15 mph E | 20% |
| Thursday Night | 78°F | Slight Chance Showers And Thunderstorms | 10 to 15 mph E | 20% |
| Friday | 98°F | Slight Chance Showers And Thunderstorms | 5 to 15 mph ENE | 25% |
Forecast source: National Weather Service (api.weather.gov) for Blackwater (33.040, -111.580). Updated through the day.
Growing snapshot for Blackwater
Last spring frost
Feb 17
First fall frost
Nov 29
Growing season
284 days
Hardiness zone
9a
More local growing data for Blackwater: nearby ZIP 85128 weather · frost dates · planting calendar · Arizona frost dates
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Climate data from the nearest NOAA station, Casa Grande Nm, Az (2.7 mi from Blackwater). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.