McKinney'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)
Jul 15, 2025 - Tue 0.22 92 76 44 20.99 0.00 4.29 7.61
Jul 14, 2025 - Mon 0.12 89 72 45 11.17 0.01 0.04 2.44
Jul 13, 2025 - Sun 0.16 89 70 44 16.62 0.01 4.70 1.53
Data Summary 0.50 92 70 44 48.78 0.02 3.01 3.86  
Detailed Crop Weather Data
Date Average Temp
(f)
Dew Point
(f)
Max Dewpoint
(f)
Min Dewpoint
(f)
Wind Run
(miles/day)
Soil Temp
(f)
Jul 15, 2025 - Tue 84 71 72 69 110 0
Jul 14, 2025 - Mon 78 69 74 66 51 0
Jul 13, 2025 - Sun 78 69 73 65 65 0
Data Summary 80 69 74 65 225 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)
Jul 15, 2025 - Tue 31 24 29 34 29 24
Jul 14, 2025 - Mon 29 20 25 30 25 20
Jul 13, 2025 - Sun 28 19 24 29 24 19
Data Summary 88 63 78 93 78 63
Chilling Hours
Date Method 1
(Hours >= 32 & <= 45 F)
Method 2
(Hours <= 45 F)
Jul 15, 2025 - Tue 0 0
Jul 14, 2025 - Mon 0 0
Jul 13, 2025 - Sun 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 6 6
Nov 81 81
Dec 155 166
Jan 224 440
Feb 187 303
Mar 52 52
Total 705 1048

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