Average annual temperature is 22.5 °C
Absolute maximum temperature: 38.7 °C
Absolute minimum temperature: 4.0 °C
Number of sunny days: 130 days
Number of rainy days: 235 days
Look at detailed online map of Grand Bayou
* Weather data for Grand Bayou United States is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 25.0 | 26.2 | 28.2 | 28.9 | 31.4 | 34.2 | 35.2 | 38.7 | 33.1 | 30.1 | 25.5 | 24.3 |
| Average daytime temperature (°C) | 19.7 | 21.1 | 23.3 | 24.4 | 28.6 | 31.3 | 31.7 | 34.5 | 30.6 | 25.7 | 20.7 | 17.4 |
| Average temperature (°C) | 15.9 | 17.3 | 19.4 | 21.1 | 25.0 | 27.8 | 29.1 | 30.9 | 27.8 | 22.5 | 17.8 | 14.7 |
| Average night temperature (°C) | 13.0 | 14.5 | 16.6 | 18.5 | 21.8 | 24.6 | 26.7 | 28.1 | 25.2 | 20.0 | 15.4 | 12.3 |
| Absolute minimum temperature (°C) | 4.0 | 6.2 | 4.2 | 13.4 | 16.5 | 21.7 | 24.9 | 26.3 | 22.5 | 12.8 | 8.6 | 5.3 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 13.0 | 14.0 | 14.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 |
| Daylight mean duration (h) | 10.5 | 11.1 | 12.0 | 12.9 | 13.6 | 14.0 | 13.8 | 13.2 | 12.3 | 11.5 | 10.7 | 10.3 |
| Daylight minimum duration (h) | 10.0 | 10.0 | 11.0 | 12.0 | 13.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 | 10.0 |
| Sunshine mean duration (h) | 7.3 | 8.4 | 9.9 | 9.5 | 11.2 | 11.3 | 11.4 | 11.8 | 11.3 | 9.3 | 6.1 | 7.2 |
| Precipitation (mm) | 121 | 104 | 80 | 160 | 160 | 200 | 128 | 25 | 69 | 110 | 188 | 196 |
| Sunny days | 16 | 9 | 11 | 10 | 6 | 3 | 4 | 12 | 5 | 16 | 15 | 23 |
| Rainy days | 15 | 19 | 20 | 20 | 25 | 27 | 27 | 19 | 25 | 15 | 15 | 8 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Grand Bayou is at