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Home > Climate > NWS St. Louis > Climate Prediction > Local Temperature Outlook

Three-Month Temperature Outlook (Issued: August 2021)

National Outlook Local Outlook Background Information Questions and Feedback
ST LOUIS INTL AP, MO
ST. LOUIS County, Coop ID: 237455
Elevation: 531 ft.
Latitude: 38° 45' N Longitude: 90° 22' W 		NOAA Online Weather Data Help

Probability of Exceedance Table
  SON OND NDJ DJF JFM FMA MAM AMJ MJJ JJA JAS ASO SON
**R 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 0.9 1.0 1.0 1.0 1.0
99% 54.6 41.3 30.3 26.7 31.2 41.0 50.8 61.7 70.3 73.6 71.8 64.7 53.9
98% 55.1 42.0 31.1 27.5 31.9 41.7 51.5 62.3 70.7 74.1 72.3 65.2 54.4
97% 55.4 42.4 31.7 28.1 32.4 42.1 51.9 62.7 71.0 74.4 72.6 65.5 54.7
96% 55.6 42.7 32.0 28.5 32.8 42.4 52.2 62.9 71.2 74.6 72.8 65.7 55.0
95% 55.8 42.9 32.4 28.8 33.1 42.6 52.5 63.1 71.4 74.8 73.0 65.9 55.2
90% 56.5 43.8 33.5 29.9 34.1 43.5 53.3 63.9 71.9 75.5 73.7 66.6 55.9
80% 57.3 44.8 34.8 31.3 35.3 44.5 54.4 64.8 72.7 76.3 74.5 67.4 56.7
70% 57.9 45.5 35.7 32.3 36.2 45.2 55.1 65.5 73.2 76.9 75.1 68.0 57.3
60% 58.3 46.1 36.5 33.1 37.0 45.8 55.8 66.1 73.6 77.3 75.5 68.4 57.8
50% 58.8 46.7 37.3 33.9 37.7 46.4 56.4 66.6 74.0 77.8 76.0 68.9 58.3
40% 59.3 47.3 38.1 34.7 38.4 47.0 57.0 67.1 74.4 78.3 76.5 69.4 58.8
30% 59.7 47.9 38.9 35.5 39.2 47.6 57.7 67.7 74.8 78.7 76.9 69.8 59.3
20% 60.3 48.6 39.8 36.5 40.1 48.3 58.4 68.4 75.3 79.3 77.5 70.4 59.9
10% 61.1 49.6 41.1 37.9 41.3 49.3 59.5 69.3 76.1 80.1 78.3 71.2 60.7
5% 61.8 50.5 42.2 39.0 42.3 50.2 60.3 70.1 76.6 80.8 79.0 71.9 61.4
4% 62.0 50.7 42.6 39.3 42.6 50.4 60.6 70.3 76.8 81.0 79.2 72.1 61.6
3% 62.2 51.0 42.9 39.7 43.0 50.7 60.9 70.5 77.0 81.2 79.4 72.3 61.9
2% 62.5 51.4 43.5 40.3 43.5 51.1 61.3 70.9 77.3 81.5 79.7 72.6 62.2
1% 63.0 52.1 44.3 41.1 44.2 51.8 62.0 71.5 77.7 82.0 80.2 73.1 62.7
*Mean 58.8 46.7 37.3 33.9 37.7 46.4 56.4 66.6 74.0 77.8 76.0 68.9 58.3
StDev 1.8 2.3 3.0 3.1 2.8 2.3 2.4 2.1 1.6 1.8 1.8 1.8 1.9

Color
Legend		Deviation from
Climatology
(deg F)
 < -2.5
 -2.0 thru -2.5
 -1.5 thru -2.0
 -1.0 thru -1.5
Color
Legend		Deviation from
Climatology
(deg F)
 -0.5 thru -1.0
 -0.5 > deg F < 0.5
 0.5 thru 1.0
 1.0 thru 1.5
Color
Legend		Deviation from
Climatology
(deg F)
 1.5 thru 2.0
 2.0 thru 2.5
 > 2.5
Table Text Only

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St. Charles, MO 63304
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