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Warm spell continues at Cahokia airport
October 20, 2026
The past 30 days at Cahokia Airport show mean daily high of 80.8°F, 6.8°F above the normal of 74°F. This sustained warmth above normal continues a trend seen 30 days ago at the start of this monitoring period and maintains conditions favorable for increased evapotranspiration and drying of surface fuels.
Temperatures run warm at Cahokia airport
October 20, 2026
Mean daily high temperatures at Cahokia St. Louis Downtown Airport have run 6.8°F above the 1991-2020 normal over the past 30 days, with mean daily lows 6.3°F above normal. This sustained warmth significantly exceeds typical late September and October conditions for the region.
St. Louis County stays abnormally dry
October 20, 2026
St. Louis County remained at D0 (Abnormally Dry) conditions for 100.00% of its area for the week of 2026-10-13 to 2026-10-19, persisting unchanged for five consecutive weeks since early September. These sustained low-moisture conditions stress amphibians and water-dependent insects that breed in regional wetlands.
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