
Réserve naturelle régionale du pré des Nonnettes
- Annual mean
- 10.2 °C
- Warmest month
- July
- Wettest month
- December
Long term monthly averages based on standardized climate observations at a representative point
Access the comprehensive twelve month climate data for Réserve naturelle régionale du Héron, derived from NASA POWER measurements for the period between 1991 and 2020. This profile details the average monthly fluctuations in temperature, precipitation rates, relative humidity, wind speed, and daylight duration. The records reflect long term environmental trends at a single representative coordinate rather than current weather conditions or site-wide variations.

Long-term monthly temperature progression and average daily precipitation for Réserve naturelle régionale du Héron
Analyze average temperature bounds, daily precipitation rates, humidity, wind speed, and daylight hours across the calendar year.
| Mean temperature | Precipitation | Humidity | Wind speed | Daylight | |
|---|---|---|---|---|---|
| January | 2.9 °C-6.6° to 11.8° | 1.9 mm/day | 92.1% | 5.6 m/s | 8.3 hours |
| February | 3.5 °C-5.6° to 13.1° | 1.8 mm/day | 88.7% | 5.4 m/s | 9.8 hours |
| March | 6.3 °C-3.1° to 17.6° | 1.6 mm/day | 83.9% | 5.1 m/s | 11.6 hours |
| April | 9.4 °C-1.3° to 21.7° | 1.5 mm/day | 79.3% | 4.4 m/s | 13.6 hours |
| May | 13.1 °C2.4° to 25.1° | 1.9 mm/day | 78% | 4.3 m/s | 15.3 hours |
| June | 16 °C6.4° to 27.8° | 2.1 mm/day | 78.1% | 4.1 m/s | 16.2 hours |
| July | 18 °C8.8° to 29.5° | 2.1 mm/day | 77.8% | 4 m/s | 15.8 hours |
| August | 17.8 °C9° to 29.3° | 2.2 mm/day | 78.6% | 3.9 m/s | 14.2 hours |
| September | 14.8 °C6° to 25.3° | 2 mm/day | 81.3% | 4.2 m/s | 12.3 hours |
| October | 10.9 °C1.1° to 21.3° | 2.2 mm/day | 86.1% | 4.8 m/s | 10.4 hours |
| November | 6.6 °C-2.1° to 16.1° | 2.4 mm/day | 91.5% | 5 m/s | 8.7 hours |
| December | 3.5 °C-5.2° to 12.3° | 2.5 mm/day | 93.5% | 5.4 m/s | 7.8 hours |
See two months side by side and how much they differ. Both use the same 1991–2020 climate normals and NASA POWER data point as the table above, so they show typical conditions, not a forecast.
Comparative monthly averages for temperature, precipitation, humidity, wind, and daylight duration
Interactive climate map
Open the climate map to compare monthly temperature, precipitation, and other averages.
Explore monthly temperature, precipitation, and regional atmospheric patterns across diverse protected landscapes







Access detailed information about the Réserve naturelle régionale du Héron through the MoriAtlas database. Gain insight into the wetland habitats, protected lake edges, and the regional ecological significance of this site within the Hauts-de-France landscape for a deeper understanding of periurban conservation.