St. Clair, Missouri Weather
St. Clair, Missouri — live current conditions, hourly and 7-day forecasts, NWS alerts, radar and satellite imagery, soil and crop conditions for St. Clair, Franklin County.
Full aviation weather for St. Clair is published on the Washington Regional Airport (KFYG) page, 27 km away. It carries the current METAR decoded into plain language — surface wind, visibility, cloud layers and ceiling, temperature and dewpoint, and altimeter setting — alongside the raw observation as transmitted. 3 airfields within reach of St. Clair have their own pages, listed below.
The Terminal Aerodrome Forecast (TAF) is shown across its full validity period, with each change group broken out so you can see when conditions are expected to shift. Flight category is derived automatically — VFR, MVFR, IFR or LIFR — from reported ceiling and visibility, with runway details and field elevation alongside. Observations update roughly hourly and forecasts several times a day.
Other airports near St. Clair: Spirit of St Louis Airport (KSUS) 45 km · Creve Coeur Airport (K1H0) 59 km
Conditions reported at KFYG describe the airfield itself. Weather 27 km away can differ, particularly in terrain or near the coast. For conditions at St. Clair specifically, see the current conditions and forecast above.
Soil conditions, frost risk and crop weather for St. Clair.
About St. Clair, Missouri
St. Clair rests in a landscape where the Ozark foothills begin to soften, a place where the Meramec River, a ribbon of cool, flowing water, has patiently shaped the terrain over millennia. It lies 23.8 miles south-west of Wildwood, MO (from Wildwood, MO: bearing 226°T), and is situated 7.4 miles south-south-east of Union. Rolling hills, cloaked in a dense tapestry of oak and hickory, cradle the town, their slopes descending into fertile valleys. The air here, especially in the early morning, carries the damp, earthy scent of the forest floor, mingling with the fainter, sweeter perfume of wild honeysuckle that often spills over fences in the warmer months. The land itself feels ancient, a quiet witness to the passage of seasons, its geological bones hinting at a deeper, more rugged past beneath the verdant surface. The origins of St. Clair are tied to the fertile banks of the Meramec and the burgeoning railroad lines that once promised connection and commerce. Historically, agriculture and timber played significant roles in its economy, the rich soil yielding crops and the abundant forests providing sustenance and building materials. Today, while still possessing a strong connection to its rural roots, St. Clair has diversified, with small businesses and a growing residential base contributing to its character. The Meramec River remains a central, life-giving feature, offering opportunities for recreation and a constant reminder of the natural forces that have sculpted this corner of Franklin County.
Live animated radar for St. Clair and surroundings — RainViewer.
NOAA GOES-16 GEOCOLOR — live animated loop updated every 10 minutes. Shows cloud cover, storm systems and weather patterns across the continental US.
Source: NOAA/NESDIS GOES-East · Public domain · Auto-updates on page reload
| Location | St. Clair, Franklin County, Missouri |
| Coordinates | 38.345329°N, 90.980974°W |
| Timezone | Central Time (America/Chicago) |
| ZIP Code(s) | 63077 |
| Area Code | 314 |
| Page generated | September 2026 |
| Weather data | Open-Meteo (open-source), NOAA National Weather Service |
About This St. Clair, Missouri Weather Page
This page provides live weather conditions and forecasts for St. Clair, Missouri, including current conditions, a 24-hour hourly forecast, 7-day outlook, NWS extended text forecast, precipitation radar and NOAA GOES-16 satellite imagery. Aviation weather — live METAR observations and TAF forecasts — is published separately on the pages for the nearest reporting airports, linked from the aviation section above. Additional sections may include tide predictions, wave height, wave direction and sea-surface temperature, a barometric pressure trend, and a solunar-based fishing forecast with a fishing-conditions rating for coastal localities, and soil temperature, crop weather and live USGS river gauge data for agricultural areas near a monitored waterway. All data updates automatically on every page visit.
Location data for St. Clair includes coordinates 38.345329°N, 90.980974°W, situated in Franklin County. ZIP code 63077. Telephone area code: 314. Timezone: Central Time (America/Chicago).
Weather data is sourced from the NOAA National Weather Service (NWS) and the open-source Open-Meteo API. River and stream data is sourced from the USGS National Water Information System. Tide predictions are sourced from NOAA CO-OPS; marine and solunar data are modeled from Open-Meteo and public sunrise/moon calculations and should be treated as a general guide alongside on-the-water conditions. Radar is provided by RainViewer. Satellite imagery is sourced from NOAA/NESDIS GOES-East and is public domain.
