0in

Rain Today

Rain Last Hour
0in

Recorded at Southwest Washington Regional Airport Updated 1 hour 3 mins ago (22.4 miles away)

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Real-Time Extremes

Hottest 102.1 °F
Seguin - Randolph AFB Auxiliary Field, TX
Coldest 30.1 °F
Barrow, Wiley Post-Will Rogers Memorial Airport, AK
Windiest 33.3mph
Mississippi Canyon, LA
Wettest (Last Hour) 0.4in
Gila Bend Air Force Auxiliary Field, AZ
Most Humid 100%
Sioux County Regional Airport, IA
Least Humid 4%
Manti-Ephriam Airport, UT
Highest Pressure 1043.3 hPa
Salida - Monarch Pass, CO
Lowest Pressure 986.8 hPa
Shenandoah Municipal, IA

Trending Locations

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Lake Merwin Rainfall Forecast

Today 16 Sep
No Rain
Thu 17 Sep
No Rain
Fri 18 Sep
No Rain
Sat 19 Sep
No Rain
Sun 20 Sep
No Rain
Mon 21 Sep
5%
Tue 22 Sep
5%

Lake Merwin Rainfall Statistics

September Rainfall

Southwest Washington Regional Airport (22.4 miles)

Total Rainfall 2026
15.4in
Daily Average 2026
0.1in
Wettest Day 13 March, 2026
1.6in
Wet Days 2026
61/259 (24%)
Total Rainfall August
0in
Daily Average August
0in
Wettest Day 1 August, 2026
0in
Wet Days August
–
Total Rainfall September
0.3in
Daily Average September
0.02in
Wettest Day 6 September, 2026
0.2in
Wet Days September
3/16 (19%)

Climate (2021–2025)

Southwest Washington Regional Airport (22.4 miles)

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Annual Average 2021–2025
39.7in
Monthly Average 2021–2026
3.2in
Daily Average 2021–2026
0.1in
Wettest Day 4 November, 2022
4.2in

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