Blackwater, AZ Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Blackwater, a community in Pinal County, Arizona.
Today
99°F
Sunny
Sunny, with a high near 99. Southwest wind 0 to 5 mph.
7-day forecast for Blackwater
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 99°F | Sunny | 0 to 5 mph SW | 0% |
| Tonight | 72°F | Mostly Clear | 0 to 5 mph SSW | 0% |
| Sunday | 99°F | Sunny | 5 mph SSE | 0% |
| Sunday Night | 74°F | Partly Cloudy | 5 mph ESE | 0% |
| Monday | 99°F | Mostly Sunny | 5 mph S | 0% |
| Monday Night | 74°F | Mostly Clear | 0 to 5 mph S | 6% |
| Tuesday | 99°F | Sunny | 0 to 5 mph S | 5% |
| Tuesday Night | 76°F | Mostly Clear | 5 to 10 mph E | 5% |
| Wednesday | 100°F | Sunny then Slight Chance Showers And Thunderstorms | 5 to 10 mph E | 14% |
| Wednesday Night | 77°F | Slight Chance Showers And Thunderstorms | 5 to 15 mph E | 19% |
| Thursday | 98°F | Slight Chance Showers And Thunderstorms | 5 to 15 mph E | 23% |
| Thursday Night | 77°F | Slight Chance Showers And Thunderstorms | 10 to 15 mph E | 23% |
| Friday | 98°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 5 to 15 mph SSE | 18% |
| Friday Night | 77°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 5 to 10 mph NE | 10% |
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.