Lewisville's 3 Day Weather Summary Sponsored by Upper Trinity Regional 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 16, 2025 - Wed 0.23 93 78 42 20.66 0.00 4.80 6.59
Jul 15, 2025 - Tue 0.24 93 77 43 22.50 0.00 3.00 6.99
Jul 14, 2025 - Mon 0.16 91 72 45 17.30 0.00 0.03 3.60
Data Summary 0.63 93 72 43 60.46 0.00 2.61 5.73  
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 16, 2025 - Wed 85 71 73 69 129 0
Jul 15, 2025 - Tue 84 71 73 68 113 0
Jul 14, 2025 - Mon 80 70 72 68 38 0
Data Summary 83 70 73 68 280 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 16, 2025 - Wed 32 25 30 35 30 25
Jul 15, 2025 - Tue 31 25 30 35 30 25
Jul 14, 2025 - Mon 29 21 26 31 26 21
Data Summary 92 71 86 101 86 71
Chilling Hours
Date Method 1
(Hours >= 32 & <= 45 F)
Method 2
(Hours <= 45 F)
Jul 16, 2025 - Wed 0 0
Jul 15, 2025 - Tue 0 0
Jul 14, 2025 - Mon 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 7 7
Nov 69 69
Dec 127 135
Jan 248 419
Feb 175 285
Mar 46 46
Total 672 961

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