Weather for Hermann, Missouri
Current Weather
Five Day Weather Forecast
Thu
H: 75°F
L: 55°F
Fri
H: 63°F
L: 58°F
Sat
H: 82°F
L: 59°F
Sun
H: 77°F
L: 60°F
Mon
H: 78°F
L: 61°F
Air Quality
Nitrogen Dioxide: 9.85 μg/m3
Sulphur Dioxide: 3.05 μg/m3
Ozone: 54 μg/m3
Astronomical
Sun Transit: 1:02 PM
Sunset: 8:17 PM
Daylight: 14 hrs 28 mins
Moon Transit: 6:07 PM
Moonset: 12:45 AM
Moon Phase: Waxing Crescent
Moon Illumination: 23.2%
Best Times for Fishing or Hunting
Major Periods
4:57 AM - 7:27 AM5:37 PM - 8:07 PM
Minor Periods
10:12 AM - 11:42 AM12:15 AM - 1:45 AM
Action Rating: 3 out of 5
Flood Warning issued May 20 at 8:44PM CDT until May 25 at 7:00AM CDT by NWS St Louis MO
Effective: Wed May 20, 2026, 8:44 PM
Expires: Fri May 22, 2026, 8:45 AM
...The Flood Warning is extended for the following rivers in Missouri... Missouri River near Chamois. Missouri River at Hermann. River forecasts are based on observed precipitation and forecast precipitation for the next 24 hours. * WHAT...Minor flooding is forecast. * WHERE...Missouri River at Hermann. * WHEN...From Thursday morning to Monday morning. * IMPACTS...At 22.3 feet, Southern portions of Old Rock Road and Twisters Road south of Rhineland begin flooding near this height. * ADDITIONAL DETAILS... - At 8:30 PM CDT Wednesday the stage was 20.3 feet. - Forecast...The river is expected to rise above flood stage late tomorrow morning to a crest of 21.9 feet Saturday morning. It will then fall below flood stage early Sunday morning. - Flood stage is 21.0 feet.
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. This product, along with additional weather and stream information, is available at https://water.noaa.gov/wfo/lsx
Flood Warning issued May 21 at 12:01PM CDT until May 25 at 8:30AM CDT by NWS St Louis MO
Effective: Thu May 21, 2026, 12:01 PM
Expires: Sat May 23, 2026, 12:15 AM
...The Flood Warning is extended for the following rivers in Missouri...Illinois... Missouri River at Hermann. Missouri River near Chamois. Bourbeuse River at Union. Kaskaskia River at Carlyle. River forecasts are based on observed precipitation and forecast precipitation for the next 24 hours. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Missouri River at Hermann. * WHEN...Until Monday morning. * IMPACTS...At 22.3 feet, Southern portions of Old Rock Road and Twisters Road south of Rhineland begin flooding near this height. * ADDITIONAL DETAILS... - At 11:30 AM CDT Thursday the stage was 21.4 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 11:30 AM CDT Thursday was 21.4 feet. - Forecast...The river will fall to 21.3 feet this afternoon. It will then rise to 21.9 feet tomorrow morning. It will fall to 21.6 feet tomorrow evening. It will then rise to 21.8 feet Saturday morning. It will fall below flood stage early Sunday morning. - Flood stage is 21.0 feet.
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Motorists should not attempt to drive around barricades or drive cars through flooded areas. This product, along with additional weather and stream information, is available at https://water.noaa.gov/wfo/lsx
Flood Warning issued May 20 at 8:44PM CDT until May 25 at 8:30PM CDT by NWS St Louis MO
Effective: Wed May 20, 2026, 8:44 PM
Expires: Fri May 22, 2026, 8:45 AM
...The Flood Warning is extended for the following rivers in Missouri... Missouri River near Chamois. Missouri River at Hermann. River forecasts are based on observed precipitation and forecast precipitation for the next 24 hours. * WHAT...Minor flooding is forecast. * WHERE...Missouri River near Chamois. * WHEN...Until Monday evening. * IMPACTS...At 17.0 feet, Flood Stage: Lower lying bottom land begins to flood. * ADDITIONAL DETAILS... - At 11:11 AM CDT Tuesday, May 19 the stage was 11.5 feet. - Forecast...The river will rise above flood stage just after midnight tonight to 18.4 feet early Friday morning. It will then fall early Friday afternoon. It will rise to 18.8 feet Saturday morning. It will then fall below flood stage Sunday morning. - Flood stage is 17.0 feet.
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. This product, along with additional weather and stream information, is available at https://water.noaa.gov/wfo/lsx
Flood Warning issued May 21 at 12:01PM CDT until May 26 at 1:00AM CDT by NWS St Louis MO
Effective: Thu May 21, 2026, 12:01 PM
Expires: Sat May 23, 2026, 12:15 AM
...The Flood Warning is extended for the following rivers in Missouri...Illinois... Missouri River at Hermann. Missouri River near Chamois. Bourbeuse River at Union. Kaskaskia River at Carlyle. River forecasts are based on observed precipitation and forecast precipitation for the next 24 hours. * WHAT...Minor flooding is forecast. * WHERE...Missouri River near Chamois. * WHEN...Until late Monday night. * IMPACTS...At 17.0 feet, Flood Stage: Lower lying bottom land begins to flood. * ADDITIONAL DETAILS... - There is no current observed data. - Forecast...The river will rise to 18.9 feet tomorrow morning. It will then fall tomorrow evening. It will rise to 18.8 feet Saturday morning. It will then fall below flood stage early Sunday afternoon. - Flood stage is 17.0 feet.
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Motorists should not attempt to drive around barricades or drive cars through flooded areas. This product, along with additional weather and stream information, is available at https://water.noaa.gov/wfo/lsx
Flood Warning issued May 20 at 7:32PM CDT until May 22 at 6:22PM CDT by NWS St Louis MO
Effective: Wed May 20, 2026, 7:32 PM
Expires: Fri May 22, 2026, 7:45 AM
...The Flood Warning is extended for the following rivers in Missouri... Bourbeuse River at Union. ...The Flood Warning continues for the following rivers in Missouri... Moreau River near Jefferson City. River forecasts are based on observed precipitation and forecast precipitation for the next 24 hours. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Bourbeuse River at Union. * WHEN...Until Friday evening. * ADDITIONAL DETAILS... - At 7:00 PM CDT Wednesday the stage was 16.7 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 7:00 PM CDT Wednesday was 16.7 feet. - Forecast...The river is expected to rise to a crest of 17.1 feet just after midnight tonight. It will then fall below flood stage early tomorrow afternoon. - Flood stage is 15.0 feet.
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. This product, along with additional weather and stream information, is available at https://water.noaa.gov/wfo/lsx
Weather Forecast
Air Quality
Nitrogen Dioxide: 7.37 μg/m3
Sulphur Dioxide: 2.37 μg/m3
Ozone: 53.92 μg/m3
Astronomical
Sun Transit: 1:02 PM
Sunset: 8:17 PM
Daylight: 14 hrs 28 mins
Moon Transit: 6:07 PM
Moonset: 12:45 AM
Moon Phase: Waxing Crescent
Moon Illumination: 23.2%
Best Times for Fishing or Hunting
Major Periods
4:57 AM - 7:27 AM5:37 PM - 8:07 PM
Minor Periods
10:12 AM - 11:42 AM12:15 AM - 1:45 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 8.37 μg/m3
Sulphur Dioxide: 2.96 μg/m3
Ozone: 52.08 μg/m3
Astronomical
Sun Transit: 1:02 PM
Sunset: 8:17 PM
Daylight: 14 hrs 29 mins
Moon Transit: 6:57 PM
Moonset: 1:20 AM
Moon Phase: Waxing Crescent
Moon Illumination: 33.4%
Best Times for Fishing or Hunting
Major Periods
5:51 AM - 8:21 AM6:27 PM - 8:57 PM
Minor Periods
11:24 AM - 12:54 AM12:50 AM - 2:20 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 6.63 μg/m3
Sulphur Dioxide: 1.55 μg/m3
Ozone: 46.28 μg/m3
Astronomical
Sun Transit: 1:02 PM
Sunset: 8:18 PM
Daylight: 14 hrs 31 mins
Moon Transit: 7:43 PM
Moonset: 1:49 AM
Moon Phase: First Quarter
Moon Illumination: 44.4%
Best Times for Fishing or Hunting
Major Periods
6:39 AM - 9:09 AM7:13 PM - 9:43 PM
Minor Periods
12:33 AM - 2:03 PM1:19 AM - 2:49 AM
Action Rating: 2 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 4.57 μg/m3
Sulphur Dioxide: 1.39 μg/m3
Ozone: 55.12 μg/m3
Astronomical
Sun Transit: 1:02 PM
Sunset: 8:19 PM
Daylight: 14 hrs 32 mins
Moon Transit: 8:27 PM
Moonset: 2:14 AM
Moon Phase: First Quarter
Moon Illumination: 55.7%
Best Times for Fishing or Hunting
Major Periods
7:23 AM - 9:53 AM7:57 PM - 10:27 PM
Minor Periods
1:38 PM - 3:08 PM1:44 AM - 3:14 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 13.07 μg/m3
Sulphur Dioxide: 2.61 μg/m3
Ozone: 37.46 μg/m3
Astronomical
Sun Transit: 1:02 PM
Sunset: 8:20 PM
Daylight: 14 hrs 34 mins
Moon Transit: 9:09 PM
Moonset: 2:36 AM
Moon Phase: First Quarter
Moon Illumination: 66.7%
Best Times for Fishing or Hunting
Major Periods
8:06 AM - 10:36 AM8:39 PM - 11:09 PM
Minor Periods
2:40 PM - 4:10 PM2:06 AM - 3:36 AM
Action Rating: 3 out of 5