Round Rock'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)
Jul 09, 2025 - Wed 0.15 86 73 62 16.93 0.00 0.00 4.66
Jul 08, 2025 - Tue 0.17 91 73 46 19.10 0.30 0.00 0.24
Jul 07, 2025 - Mon 0.17 90 74 47 18.52 0.06 0.00 3.11
Data Summary 0.48 91 73 51 54.55 0.36 0.00 2.67  
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 09, 2025 - Wed 78 70 74 66 161 79
Jul 08, 2025 - Tue 79 72 76 69 142 79
Jul 07, 2025 - Mon 80 72 75 69 172 78
Data Summary 79 71 76 66 476 78
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 09, 2025 - Wed 29 20 25 30 25 20
Jul 08, 2025 - Tue 29 22 27 32 27 22
Jul 07, 2025 - Mon 30 22 27 32 27 22
Data Summary 88 64 79 94 79 64
Chilling Hours
Date Method 1
(Hours >= 32 & <= 45 F)
Method 2
(Hours <= 45 F)
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 4 4
Nov 51 51
Dec 96 96
Jan 218 339
Feb 154 221
Mar 38 38
Total 561 749

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