Mercedes District Settling Basin Rainfall Forecast

Today 28 Sep
5%
Tue 29 Sep
10%
Wed 30 Sep
15%
Thu 1 Oct
75%
Fri 2 Oct
85%
Sat 3 Oct
65%
Sun 4 Oct
55%

Mercedes District Settling Basin Rainfall Statistics

September Rainfall

Harlingen, Rio Grande Valley International Airport (18.6 miles)

Total Rainfall 2026
14.5in
Daily Average 2026
0.1in
Wettest Day 2 June, 2026
2.6in
Wet Days 2026
40/271 (15%)
Total Rainfall August
0.02in
Daily Average August
0in
Wettest Day 8 August, 2026
0.02in
Wet Days August
1/31 (3%)
Total Rainfall September
0.1in
Daily Average September
0in
Wettest Day 14 September, 2026
0.04in
Wet Days September
2/28 (7%)

Climate (2021–2025)

Harlingen, Rio Grande Valley International Airport (18.6 miles)

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Annual Average 2021–2025
32.4in
Monthly Average 2021–2026
2.5in
Daily Average 2021–2026
0.1in
Wettest Day 27 March, 2025
14in

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