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Lewis County Weather Forecast
| TODAY | TONIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT |
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| Patchy Fog | Patchy Fog | Patchy Fog | Mostly Clear | Sunny | Mostly Clear | Sunny | Mostly Clear | Sunny | Mostly Clear | Sunny | Partly Cloudy |
| Hi: 89°FHi: 32°C | Lo: 65°FLo: 18°C | Hi: 91°FHi: 33°C | Lo: 69°FLo: 21°C | Hi: 91°FHi: 33°C | Lo: 70°FLo: 21°C | Hi: 91°FHi: 33°C | Lo: 71°FLo: 22°C | Hi: 95°FHi: 35°C | Lo: 71°FLo: 22°C | Hi: 95°FHi: 35°C | Lo: 71°FLo: 22°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 613 AM CDT Fri Aug 28 2026 
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Issued: 1152 AM CDT Fri Aug 28 2026
Key Messages
Updated at 1151 AM CDT Fri Aug 28 2026- Patchy fog again tonight.
- Seasonal highs today with a warming trend over the weekend, becoming hot next week, with highs in the low to upper 90s.
- Low to no rain chances.
Aviation
... (18Z TAFS) Issued at 1151 AM CDT Fri Aug 28 2026
VFR conditions prevail through the TAF period with light northeasterly winds. There is a low chance for fog tonight, potentially impacting CSV and SRB. However, confidence was not high enough to include in TAFs at this t...