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)
Mar 18, 2025 - Tue 0.25 82 56 32 22.22 0.00 7.40 16.00
Mar 17, 2025 - Mon 0.23 82 38 15 23.00 0.00 0.00 14.35
Mar 16, 2025 - Sun 0.16 78 40 5 23.38 0.00 0.00 10.91
Data Summary 0.63 82 38 17 68.60 0.00 2.47 13.75  
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 68 53 60 47 1,055 59
Mar 17, 2025 - Mon 61 42 52 31 645 58
Mar 16, 2025 - Sun 60 36 46 28 239 59
Data Summary 63 43 60 28 1,939 58
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 19 9 14 19 14 9
Mar 17, 2025 - Mon 10 0 5 10 5 0
Mar 16, 2025 - Sun 9 0 4 9 4 0
Data Summary 38 9 23 38 23 9
Chilling Hours
Date Method 1
(Hours >= 32 & <= 45 F)
Method 2
(Hours <= 45 F)
Mar 18, 2025 - Tue 0 0
Mar 17, 2025 - Mon 7 7
Mar 16, 2025 - Sun 3 3
Data Summary 10 10
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 27 27
Total 550 738

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