St. Paul, TX Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for St. Paul, a town in Collin County, Texas.
Overnight
75°F
Mostly Clear
Mostly clear. Low around 75, with temperatures rising to around 77 overnight. South wind around 5 mph.
7-day forecast for St. Paul
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 75°F | Mostly Clear | 5 mph S | 0% |
| Saturday | 98°F | Sunny | 5 to 10 mph S | 0% |
| Saturday Night | 75°F | Mostly Clear | 10 mph S | 0% |
| Sunday | 99°F | Mostly Sunny | 5 to 10 mph S | 14% |
| Sunday Night | 74°F | Chance Showers And Thunderstorms | 5 mph S | 45% |
| Monday | 95°F | Chance Showers And Thunderstorms | 5 mph WSW | 45% |
| Monday Night | 71°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 5 to 10 mph NNE | 18% |
| Tuesday | 91°F | Mostly Sunny | 10 mph NNE | 12% |
| Tuesday Night | 69°F | Partly Cloudy | 5 to 10 mph NE | 9% |
| Wednesday | 91°F | Sunny | 10 mph ENE | 9% |
| Wednesday Night | 69°F | Partly Cloudy | 5 mph ENE | 2% |
| Thursday | 91°F | Mostly Sunny | 5 mph E | 3% |
| Thursday Night | 69°F | Partly Cloudy | 5 mph E | 1% |
| Friday | 91°F | Mostly Sunny | 5 to 10 mph E | 3% |
Forecast source: National Weather Service (api.weather.gov) for St. Paul (33.047, -96.553). Updated through the day.
Growing snapshot for St. Paul
Last spring frost
Mar 10
First fall frost
Nov 19
Growing season
254 days
Hardiness zone
8b
More local growing data for St. Paul: nearby ZIP 75098 weather · frost dates · planting calendar · Texas frost dates
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Climate data from the nearest NOAA station, Lavon Dam, Tx (3.2 mi from St. Paul). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.