Huntsville's 7 Day Weather Summary Sponsored by Sam Houston State University
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 04, 2025 - Fri 0.09 86 70 62 9.12 0.01 0.00 2.90
Jul 03, 2025 - Thu 0.10 88 69 53 10.52 0.45 1.76 4.56
Jul 02, 2025 - Wed 0.19 91 73 33 21.58 0.00 0.02 3.21
Jul 01, 2025 - Tue 0.19 93 69 32 23.28 0.00 0.00 2.30
Jun 30, 2025 - Mon 0.18 91 71 44 19.09 0.00 0.06 2.52
Jun 29, 2025 - Sun 0.20 91 73 47 21.13 0.00 0.00 6.79
Jun 28, 2025 - Sat 0.20 91 71 41 23.13 0.00 0.96 2.16
Data Summary 1.15 93 69 44 127.85 0.46 0.40 3.49  
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 04, 2025 - Fri 77 70 73 66 23 0
Jul 03, 2025 - Thu 77 68 72 59 29 0
Jul 02, 2025 - Wed 83 69 71 66 34 0
Jul 01, 2025 - Tue 81 68 71 65 22 0
Jun 30, 2025 - Mon 80 68 71 65 59 0
Jun 29, 2025 - Sun 80 70 71 68 80 0
Jun 28, 2025 - Sat 82 69 71 68 55 0
Data Summary 80 68 73 59 301 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 04, 2025 - Fri 28 18 23 28 23 18
Jul 03, 2025 - Thu 27 19 24 29 24 19
Jul 02, 2025 - Wed 29 22 27 32 27 22
Jul 01, 2025 - Tue 27 21 26 31 26 21
Jun 30, 2025 - Mon 28 21 26 31 26 21
Jun 29, 2025 - Sun 29 22 27 32 27 22
Jun 28, 2025 - Sat 28 21 26 31 26 21
Data Summary 196 144 179 214 179 144
Chilling Hours
Date Method 1
(Hours >= 32 & <= 45 F)
Method 2
(Hours <= 45 F)
Jul 04, 2025 - Fri 0 0
Jul 03, 2025 - Thu 0 0
Jul 02, 2025 - Wed 0 0
Jul 01, 2025 - Tue 0 0
Jun 30, 2025 - Mon 0 0
Jun 29, 2025 - Sun 0 0
Jun 28, 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 49 49
Dec 113 115
Jan 230 337
Feb 134 187
Mar 24 24
Total 550 712

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