Marfa's 14 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 31, 2025 - Mon 0.25 83 42 1 29.70 0.00 3.47 4.33
Mar 30, 2025 - Sun 0.24 81 44 7 29.05 0.00 4.53 6.37
Mar 29, 2025 - Sat 0.23 80 45 4 22.29 0.00 4.58 8.58
Mar 28, 2025 - Fri 0.21 83 44 6 27.52 0.00 3.93 6.33
Mar 27, 2025 - Thu 0.16 76 53 31 15.34 0.67 5.35 4.14
Mar 26, 2025 - Wed 0.25 83 58 11 23.59 0.00 1.60 9.06
Mar 25, 2025 - Tue 0.26 84 42 4 27.47 0.00 5.35 5.42
Mar 24, 2025 - Mon 0.23 82 40 5 27.38 0.00 6.22 3.52
Mar 23, 2025 - Sun 0.26 82 45 1 24.02 0.00 5.46 8.71
Mar 22, 2025 - Sat 0.25 84 38 0 27.85 0.00 6.98 9.30
Mar 21, 2025 - Fri 0.22 79 29 0 27.37 0.00 5.61 6.16
Mar 20, 2025 - Thu 0.20 65 28 3 27.50 0.00 6.42 8.17
Mar 19, 2025 - Wed 0.27 67 43 2 27.81 0.00 9.79 14.97
Mar 18, 2025 - Tue 0.32 85 44 1 26.73 0.00 0.34 12.47
Data Summary 3.35 85 28 5 363.62 0.67 4.97 7.68  
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 31, 2025 - Mon 64 35 50 19 451 62
Mar 30, 2025 - Sun 64 37 50 25 464 62
Mar 29, 2025 - Sat 64 40 48 31 543 63
Mar 28, 2025 - Fri 63 47 54 42 381 65
Mar 27, 2025 - Thu 63 49 53 44 548 69
Mar 26, 2025 - Wed 70 46 54 36 629 69
Mar 25, 2025 - Tue 65 35 51 13 531 65
Mar 24, 2025 - Mon 63 34 49 18 446 63
Mar 23, 2025 - Sun 63 29 48 12 582 62
Mar 22, 2025 - Sat 60 26 50 5 490 60
Mar 21, 2025 - Fri 56 24 45 1 423 59
Mar 20, 2025 - Thu 49 19 33 4 630 59
Mar 19, 2025 - Wed 56 23 34 12 1,037 62
Mar 18, 2025 - Tue 68 35 51 14 859 61
Data Summary 62 34 54 1 8,012 62
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 31, 2025 - Mon 13 3 8 13 8 3
Mar 30, 2025 - Sun 12 2 7 12 7 2
Mar 29, 2025 - Sat 13 3 8 13 8 3
Mar 28, 2025 - Fri 13 3 8 13 8 3
Mar 27, 2025 - Thu 15 5 10 15 10 5
Mar 26, 2025 - Wed 20 10 15 20 15 10
Mar 25, 2025 - Tue 13 3 8 13 8 3
Mar 24, 2025 - Mon 11 1 6 11 6 1
Mar 23, 2025 - Sun 14 4 9 14 9 4
Mar 22, 2025 - Sat 11 1 6 11 6 1
Mar 21, 2025 - Fri 4 0 0 4 0 0
Mar 20, 2025 - Thu 0 0 0 0 0 0
Mar 19, 2025 - Wed 5 0 0 5 0 0
Mar 18, 2025 - Tue 14 4 9 14 9 4
Data Summary 158 39 94 158 94 39
Chilling Hours
Date Method 1
(Hours >= 32 & <= 45 F)
Method 2
(Hours <= 45 F)
Mar 31, 2025 - Mon 2 2
Mar 30, 2025 - Sun 2 2
Mar 29, 2025 - Sat 0 0
Mar 28, 2025 - Fri 2 2
Mar 27, 2025 - Thu 0 0
Mar 26, 2025 - Wed 0 0
Mar 25, 2025 - Tue 4 4
Mar 24, 2025 - Mon 4 4
Mar 23, 2025 - Sun 0 0
Mar 22, 2025 - Sat 10 10
Mar 21, 2025 - Fri 7 8
Mar 20, 2025 - Thu 7 10
Mar 19, 2025 - Wed 2 2
Mar 18, 2025 - Tue 2 2
Data Summary 42 46
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 141 141
Dec 240 269
Jan 279 471
Feb 196 250
Mar 135 147
Total 991 1278

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