Hot-summer humid continental climate
Climate Lake Saint Louis - Missouri
Annual high65ºF
Annual low44ºF
Precipitation44.13 inch
| Month | HighºF | LowºF | Precipinch | Snowinch |
|---|---|---|---|---|
| Jan | 39 | 20 | 2.37 | 3 |
| Feb | 45 | 24 | 2.49 | 5 |
| Mar | 55 | 33 | 3.51 | 1 |
| Apr | 67 | 44 | 3.78 | 0 |
| May | 75 | 54 | 4.90 | 0 |
| Jun | 83 | 63 | 4.60 | 0 |
| Jul | 87 | 67 | 4.48 | 0 |
| Aug | 86 | 65 | 3.14 | 0 |
| Sep | 79 | 56 | 3.72 | 0 |
| Oct | 68 | 45 | 3.69 | 0 |
| Nov | 56 | 36 | 4.11 | 0 |
| Dec | 42 | 24 | 3.34 | 3 |
- JanHigh 39ºFLow 20ºFPrecip 2.37 inch
- FebHigh 45ºFLow 24ºFPrecip 2.49 inch
- MarHigh 55ºFLow 33ºFPrecip 3.51 inch
- AprHigh 67ºFLow 44ºFPrecip 3.78 inch
- MayHigh 75ºFLow 54ºFPrecip 4.90 inch
- JunHigh 83ºFLow 63ºFPrecip 4.60 inch
- JulHigh 87ºFLow 67ºFPrecip 4.48 inch
- AugHigh 86ºFLow 65ºFPrecip 3.14 inch
- SepHigh 79ºFLow 56ºFPrecip 3.72 inch
- OctHigh 68ºFLow 45ºFPrecip 3.69 inch
- NovHigh 56ºFLow 36ºFPrecip 4.11 inch
- DecHigh 42ºFLow 24ºFPrecip 3.34 inch
Climate summary
What is the average weather in Lake Saint Louis, Missouri?
Lake Saint Louis experiences a humid continental climate, marked by a very large seasonal temperature contrast. Summers are hot, while winters are cold and bring regular snowfall. Precipitation is fairly wet overall, spread relatively evenly throughout the year, with winter moisture often arriving as snow.
Lake Saint Louis weather averages
Annual high65ºF
Annual low44ºF
Precipitation44.13 inch
Snowfall12 inch
Daily normals Lake Saint Louis - Missouri - January
| Day | HighºF | LowºF | Prec/ | Prec/ | Snow/ | Snow/ |
|---|---|---|---|---|---|---|
| Jan 1 | 40.0 | 22.7 | 0.10 | 0.10 | 0.10 | 0.10 |
| Jan 2 | 39.9 | 22.5 | 0.20 | 0.20 | 0.20 | 0.20 |
| Jan 3 | 39.7 | 22.3 | 0.30 | 0.30 | 0.30 | 0.30 |
| Jan 4 | 39.6 | 22.2 | 0.39 | 0.39 | 0.40 | 0.40 |
| Jan 5 | 39.4 | 22.0 | 0.49 | 0.49 | 0.50 | 0.50 |
| Jan 6 | 39.3 | 21.9 | 0.59 | 0.59 | 0.60 | 0.60 |
| Jan 7 | 39.2 | 21.7 | 0.68 | 0.68 | 0.80 | 0.80 |
| Jan 8 | 39.1 | 21.6 | 0.77 | 0.77 | 0.90 | 0.90 |
| Jan 9 | 39.0 | 21.5 | 0.86 | 0.86 | 1.00 | 1.00 |
| Jan 10 | 38.9 | 21.4 | 0.95 | 0.95 | 1.10 | 1.10 |
| Jan 11 | 38.9 | 21.2 | 1.03 | 1.03 | 1.20 | 1.20 |
| Jan 12 | 38.8 | 21.1 | 1.11 | 1.11 | 1.30 | 1.30 |
| Jan 13 | 38.8 | 21.0 | 1.18 | 1.18 | 1.40 | 1.40 |
| Jan 14 | 38.8 | 20.9 | 1.26 | 1.26 | 1.60 | 1.60 |
| Jan 15 | 38.7 | 20.9 | 1.34 | 1.34 | 1.70 | 1.70 |
| Jan 16 | 38.8 | 20.8 | 1.42 | 1.42 | 1.80 | 1.80 |
| Jan 17 | 38.8 | 20.7 | 1.50 | 1.50 | 2.00 | 2.00 |
| Jan 18 | 38.8 | 20.7 | 1.58 | 1.58 | 2.10 | 2.10 |
| Jan 19 | 38.8 | 20.6 | 1.66 | 1.66 | 2.30 | 2.30 |
| Jan 20 | 38.9 | 20.6 | 1.74 | 1.74 | 2.40 | 2.40 |
| Jan 21 | 39.0 | 20.6 | 1.82 | 1.82 | 2.60 | 2.60 |
| Jan 22 | 39.1 | 20.6 | 1.90 | 1.90 | 2.70 | 2.70 |
| Jan 23 | 39.2 | 20.6 | 1.98 | 1.98 | 2.90 | 2.90 |
| Jan 24 | 39.3 | 20.6 | 2.07 | 2.07 | 3.10 | 3.10 |
| Jan 25 | 39.4 | 20.7 | 2.15 | 2.15 | 3.20 | 3.20 |
| Jan 26 | 39.6 | 20.7 | 2.24 | 2.24 | 3.40 | 3.40 |
| Jan 27 | 39.7 | 20.8 | 2.31 | 2.31 | 3.50 | 3.50 |
| Jan 28 | 39.9 | 20.9 | 2.39 | 2.39 | 3.70 | 3.70 |
| Jan 29 | 40.1 | 21.0 | 2.46 | 2.46 | 3.80 | 3.80 |
| Jan 30 | 40.3 | 21.1 | 2.54 | 2.54 | 4.00 | 4.00 |
| Jan 31 | 40.5 | 21.2 | 2.61 | 2.61 | 4.10 | 4.10 |
Precipitation and snow add up through the month (/mo) and the year (/yr)
Weather history Lake Saint Louis - October 2026
| Day | HighºF | LowºF | Precip.inch |
|---|---|---|---|
| Oct 1 | 89.1 | 64.0 | 0.00 |
| Oct 2 | 86.0 | 62.1 | 0.22 |
| Oct 3 | 75.9 | 50.0 | T |
| Oct 4 | 75.9 | 48.0 | 0.00 |
| Oct 5 | – | – | – |
| Oct 6 | – | – | – |
| Oct 7 | – | – | – |
| Oct 8 | 89.1 | 53.1 | 0.00 |
| Oct 9 | 84.9 | 51.1 | 0.00 |
| Oct 10 | 89.1 | 51.1 | 0.00 |
| Oct 11 | 81.0 | 51.1 | 0.00 |
| Oct 12 | 87.1 | 51.1 | 0.00 |
| Oct 13 | 91.0 | 64.0 | 0.00 |
| Oct 14 | 93.0 | 64.0 | 0.56 |
| Oct 15 | 75.9 | 66.0 | 0.15 |
| Oct 16 | 82.0 | 52.0 | 0.01 |
| Oct 17 | 57.0 | 41.0 | 0.03 |
| Oct 18 | – | – | – |
| Oct 19 | 68.0 | 39.0 | 0.00 |
| Oct 20 | – | – | – |
| Oct 21 | – | – | – |
| Oct 22 | 77.0 | 45.0 | 0.00 |
| Oct 23 | 78.1 | 45.0 | 0.00 |
| Oct 24 | 79.0 | 46.9 | 0.00 |
| Oct 25 | 78.1 | 48.0 | 0.00 |
| Oct 26 | 79.0 | 46.9 | 0.00 |
| Oct 27 | 77.0 | 50.0 | 0.00 |
| Oct 28 | 72.0 | 50.0 | T |
| Oct 29 | 82.0 | 50.0 | 0.00 |
| Oct 30 | – | – | – |
| Oct 31 | – | – | – |
The data for October 2026 is incomplete: some days or values are missing.
- –No data
- –Not yet observed or received
- TTrace, too small to measure
Observed extremes
- Highest max temperature93.0ºF · Oct 14
- Lowest max temperature57.0ºF · Oct 17
- Highest min temperature66.0ºF · Oct 15
- Lowest min temperature39.0ºF · Oct 19
Geo Lake Saint Louis - Missouri
Location
- Country
- United States
- State
- Missouri
- County
- –
- City
- Lake Saint Louis
- Zip Code
- 63367
- Elevation
- 604 ft
- Longitude
- -90.79
- Latitude
- 38.78
- ICAO
- –
- IATA
- –