Marine Weather and Tide Forecast for Olmsted, IL
 | Sunrise 6:04 AM Sunset 8:03 PM Moonrise 10:31 PM Moonset 11:03 AM |
Marine Forecasts
NOTE: Zones updated 4/16/2026. Some zones changed. Use Edit if needed.
7 Day Forecast for Marine Location Near Olmsted, IL
NEW! Add second zone forecast
FXUS63 KPAH 031737 AFDPAH
Area Forecast Discussion National Weather Service Paducah KY 1232 PM CDT Mon Aug 3 2026
KEY MESSAGES
- Dry conditions are expected through Wednesday, with temperatures slowly moderating closer to normal in the upper 80s.
- Late week (Thursday-Saturday) has the potential to be at least somewhat unsettled. Highest rain chances (40-60%) are currently forecast Thursday night, which is when a low end threat (5%) for a few strong to severe storms can't be ruled out.
- Temperatures are forecast to remain close to normal in the upper 80s late week before nudging up to 90/low 90s early next week. Heat index readings may exceed 100 by Sunday, but are more likely early next week (50-60% chance by next Tuesday/Wednesday).
DISCUSSION
Issued at 1231 PM CDT Mon Aug 3 2026
The upper trough which plagued our region with persistent cloud cover, light showers, and cool temperatures over the weekend has pushed off to our east, now positioned from New England south across the Appalachians into AL/GA. The southern part of the trough gets cutoff and may slowly churn slightly northwestward Tues-Wed, but any convection associated with it likely remains southeast of our cwa.
Northern stream energy will dive southeast across the Midwest on Thursday, which allows a cold front to sink south closer to our area. Scattered convection is expected to develop and push into portions of our Thursday evening/overnight. 0-6km shear may increase to 25 kts or so along with SBCAPE of at least 2000 j/kg, which may lead to at least a lower end severe threat. If later timing pans out though, convection may be in a weakening state as it pushes southeast into our area.
Additional chances for convection are possible Friday into Saturday with mid level disturbances moving across the Ohio Valley. However, shear looks weaker (less than 20 kts) during this period, so should struggle to get anything organized.
Temperatures trend warmer mid to late week, but should primarily remain below 90 through Saturday. Trends over the past 48 hours have slowed down on the onset of our next heat potential, holding off until Sunday or even early next week before heat index readings may exceed 100 again. LREF does suggest a 50-60% chance at reaching 100+ heat index readings by next Tues/Wed. Current NBM dewpoints are back into the mid 70s Sunday into mid next week, with the 75th percentile suggesting 78-79 readings potentially returning. We may be on the outer periphery of the ridge next week which may allow convection to seep into parts of the area and tamp down the heat potential some.
However, for now the best chance at MCS activity is north of us early to mid next week.
AVIATION /18Z TAFS THROUGH 18Z TUESDAY/
Issued at 1205 PM CDT Mon Aug 3 2026
SCT-BKN cu field may initially flirt with MVFR levels next couple of hours before lifting to 4-5kft by mid afternoon. SKC is expected this evening and overnight before additional cu development is expected by late morning Tuesday, with initial MVFR bases possible. Some patchy fog is possible again early Tuesday morning, with KCGI/KMVN the most likely terminals to be impacted. Northeasterly winds remain light aob 7kts through the period.
PAH WATCHES/WARNINGS/ADVISORIES
IL...None.
MO...None.
IN...None.
KY...None.
Area Forecast Discussion National Weather Service Paducah KY 1232 PM CDT Mon Aug 3 2026
KEY MESSAGES
- Dry conditions are expected through Wednesday, with temperatures slowly moderating closer to normal in the upper 80s.
- Late week (Thursday-Saturday) has the potential to be at least somewhat unsettled. Highest rain chances (40-60%) are currently forecast Thursday night, which is when a low end threat (5%) for a few strong to severe storms can't be ruled out.
- Temperatures are forecast to remain close to normal in the upper 80s late week before nudging up to 90/low 90s early next week. Heat index readings may exceed 100 by Sunday, but are more likely early next week (50-60% chance by next Tuesday/Wednesday).
DISCUSSION
Issued at 1231 PM CDT Mon Aug 3 2026
The upper trough which plagued our region with persistent cloud cover, light showers, and cool temperatures over the weekend has pushed off to our east, now positioned from New England south across the Appalachians into AL/GA. The southern part of the trough gets cutoff and may slowly churn slightly northwestward Tues-Wed, but any convection associated with it likely remains southeast of our cwa.
Northern stream energy will dive southeast across the Midwest on Thursday, which allows a cold front to sink south closer to our area. Scattered convection is expected to develop and push into portions of our Thursday evening/overnight. 0-6km shear may increase to 25 kts or so along with SBCAPE of at least 2000 j/kg, which may lead to at least a lower end severe threat. If later timing pans out though, convection may be in a weakening state as it pushes southeast into our area.
Additional chances for convection are possible Friday into Saturday with mid level disturbances moving across the Ohio Valley. However, shear looks weaker (less than 20 kts) during this period, so should struggle to get anything organized.
Temperatures trend warmer mid to late week, but should primarily remain below 90 through Saturday. Trends over the past 48 hours have slowed down on the onset of our next heat potential, holding off until Sunday or even early next week before heat index readings may exceed 100 again. LREF does suggest a 50-60% chance at reaching 100+ heat index readings by next Tues/Wed. Current NBM dewpoints are back into the mid 70s Sunday into mid next week, with the 75th percentile suggesting 78-79 readings potentially returning. We may be on the outer periphery of the ridge next week which may allow convection to seep into parts of the area and tamp down the heat potential some.
However, for now the best chance at MCS activity is north of us early to mid next week.
AVIATION /18Z TAFS THROUGH 18Z TUESDAY/
Issued at 1205 PM CDT Mon Aug 3 2026
SCT-BKN cu field may initially flirt with MVFR levels next couple of hours before lifting to 4-5kft by mid afternoon. SKC is expected this evening and overnight before additional cu development is expected by late morning Tuesday, with initial MVFR bases possible. Some patchy fog is possible again early Tuesday morning, with KCGI/KMVN the most likely terminals to be impacted. Northeasterly winds remain light aob 7kts through the period.
PAH WATCHES/WARNINGS/ADVISORIES
IL...None.
MO...None.
IN...None.
KY...None.
Link to 5 hour of 5 minute data for KCIR
Terminal Aerodrome Forecast (TAF) for KCIR
Wind History Graph: CIR
(wind in knots)
GEOS Local Image of Southern Mississippi Valley
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