John Martin Reservoir State Park Rainfall Forecast

Today 21 Sep
95%
Tue 22 Sep
30%
Wed 23 Sep
60%
Thu 24 Sep
55%
Fri 25 Sep
35%
Sat 26 Sep
10%
Sun 27 Sep
10%

John Martin Reservoir State Park Rainfall Statistics

September Rainfall

Lamar Municipal Airport (19.3 miles)

Total Rainfall 2026
12.9in
Daily Average 2026
0.05in
Wettest Day 28 July, 2026
1.9in
Wet Days 2026
49/264 (19%)
Total Rainfall August
4.5in
Daily Average August
0.1in
Wettest Day 14 August, 2026
1.5in
Wet Days August
15/31 (48%)
Total Rainfall September
1.6in
Daily Average September
0.1in
Wettest Day 8 September, 2026
0.8in
Wet Days September
4/21 (19%)

Climate (2021–2025)

Lamar Municipal Airport (19.3 miles)

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Annual Average 2021–2025
14.9in
Monthly Average 2021–2026
1.2in
Daily Average 2021–2026
0.04in
Wettest Day 7 June, 2022
2in

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