Ozona-Sonora's 3 Day Weather Summary Sponsored by Texas Water Development Board
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)
Mar 18, 2025 - Tue 0.33 87 55 14 24.50 0.00 10.89 10.87
Mar 17, 2025 - Mon 0.29 82 48 4 24.31 0.00 2.53 15.42
Mar 16, 2025 - Sun 0.22 73 43 6 25.16 0.00 4.39 8.74
Data Summary 0.84 87 43 8 73.97 0.00 5.94 11.68  
Detailed Crop Weather Data
Date Average Temp
(f)
Dew Point
(f)
Max Dewpoint
(f)
Min Dewpoint
(f)
Wind Run
(miles/day)
Soil Temp
(f)
Mar 18, 2025 - Tue 71 47 57 37 1,009 66
Mar 17, 2025 - Mon 65 34 48 19 795 62
Mar 16, 2025 - Sun 59 31 40 21 600 63
Data Summary 65 37 57 19 2,403 63
Heat Units
Date Corn
(heat units)
Cotton
(heat units)
Sorghum
(heat units)
50 Degree
(heat units)
55 Degree
(heat units)
60 Degree
(heat units)
Mar 18, 2025 - Tue 20 11 16 21 16 11
Mar 17, 2025 - Mon 15 5 10 15 10 5
Mar 16, 2025 - Sun 8 0 3 8 3 0
Data Summary 43 16 29 44 29 16
Chilling Hours
Date Method 1
(Hours >= 32 & <= 45 F)
Method 2
(Hours <= 45 F)
Mar 18, 2025 - Tue 0 0
Mar 17, 2025 - Mon 0 0
Mar 16, 2025 - Sun 2 2
Data Summary 2 2
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 30 30
Dec 108 108
Jan 301 411
Feb 146 219
Mar 11 11
Total 596 779

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