Lewisville's 7 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 13, 2025 - Sun 0.19 90 74 46 20.51 0.01 0.00 0.86
Jul 12, 2025 - Sat 0.20 91 73 48 19.57 0.01 3.96 4.78
Jul 11, 2025 - Fri 0.28 92 78 43 24.32 0.04 6.74 7.14
Jul 10, 2025 - Thu 0.25 94 73 38 26.10 0.04 0.24 6.97
Jul 09, 2025 - Wed 0.21 93 72 42 23.56 0.13 1.94 2.84
Jul 08, 2025 - Tue 0.22 94 73 41 21.63 0.00 2.81 4.03
Jul 07, 2025 - Mon 0.20 91 74 43 20.09 0.00 0.00 7.50
Data Summary 1.57 94 72 43 155.79 0.23 2.24 4.87  
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 13, 2025 - Sun 80 69 72 66 59 0
Jul 12, 2025 - Sat 81 70 72 65 119 0
Jul 11, 2025 - Fri 85 68 71 66 170 0
Jul 10, 2025 - Thu 84 70 72 68 97 0
Jul 09, 2025 - Wed 81 69 72 61 62 0
Jul 08, 2025 - Tue 83 69 73 64 91 0
Jul 07, 2025 - Mon 82 69 71 67 87 0
Data Summary 82 69 73 61 684 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 13, 2025 - Sun 30 22 27 32 27 22
Jul 12, 2025 - Sat 29 22 27 32 27 22
Jul 11, 2025 - Fri 32 25 30 35 30 25
Jul 10, 2025 - Thu 29 24 29 34 29 24
Jul 09, 2025 - Wed 29 22 27 32 27 22
Jul 08, 2025 - Tue 29 24 29 34 29 24
Jul 07, 2025 - Mon 30 22 27 32 27 22
Data Summary 208 161 196 231 196 161
Chilling Hours
Date Method 1
(Hours >= 32 & <= 45 F)
Method 2
(Hours <= 45 F)
Jul 13, 2025 - Sun 0 0
Jul 12, 2025 - Sat 0 0
Jul 11, 2025 - Fri 0 0
Jul 10, 2025 - Thu 0 0
Jul 09, 2025 - Wed 0 0
Jul 08, 2025 - Tue 0 0
Jul 07, 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