Rockwall's 3 Day Weather Summary Sponsored by North Texas Municipal Water District
Date ETo
(in)
Max Temp
(f)
Min Temp
(f)
Min RH
(%)
Solar Rad.
(MJ/m2)
Rainfall
(in)
Wind 4am
(mph)
Wind 4pm
(mph)
Battery
(v)
Aug 25, 2025 - Mon 0.19 97 77 29 18.52 0.00 2.20 2.61
Aug 24, 2025 - Sun 0.18 98 75 30 20.29 0.00 0.00 2.38
Aug 23, 2025 - Sat 0.19 95 77 27 20.21 0.00 0.43 4.43
Data Summary 0.56 98 75 28 59.02 0.00 0.88 3.14  
Detailed Crop Weather Data
Date Average Temp
(f)
Dew Point
(f)
Max Dewpoint
(f)
Min Dewpoint
(f)
Wind Run
(miles/day)
Soil Temp
(f)
Aug 25, 2025 - Mon 86 67 72 64 57 0
Aug 24, 2025 - Sun 86 67 73 62 34 0
Aug 23, 2025 - Sat 86 68 71 62 46 0
Data Summary 86 67 73 62 137 0
Heat Units
Date Corn
(heat units)
Cotton
(heat units)
Sorghum
(heat units)
50 Degree
(heat units)
55 Degree
(heat units)
60 Degree
(heat units)
Aug 25, 2025 - Mon 31 27 32 37 32 27
Aug 24, 2025 - Sun 30 26 31 36 31 26
Aug 23, 2025 - Sat 31 26 31 36 31 26
Data Summary 92 79 94 109 94 79
Chilling Hours
Date Method 1
(Hours >= 32 & <= 45 F)
Method 2
(Hours <= 45 F)
Aug 25, 2025 - Mon 0 0
Aug 24, 2025 - Sun 0 0
Aug 23, 2025 - Sat 0 0
Data Summary 0 0
Chilling Hours for the 2024-2025 Season
October 1, 2024 thru March 31, 2025
Month Method 1
(Hours >= 32 & <= 45 F)
Method 2
(Hours <= 45 F)
Oct 0 0
Nov 53 53
Dec 136 145
Jan 241 413
Feb 169 276
Mar 37 37
Total 636 924

Calculators

Landscape
Crop
Landscape Watering Calculator
1.) ETo (pet)
2.) Plant Coefficient
3.) Adjustment Factor
4.) Effective Rainfall
5.)
Precipitation Rate
Total Run Time
Irrigations/Week
Run Time/Irrigation
Crop Watering Calculator
1.) ETo value from weather data
2.) Select a crop coefficient
FAO Coefficients
Or
Texas High Plains Coefficients
3.) Select a crop growth stage
4.) Crop coefficient from growth stage
5.) Enter your system efficiency
6.) Effective Rainfall
7.)
Precipitation Rate
Total Run Time
Irrigations/Week
Run Time/Irrigation