SwissNature.org - Monthly weather and climate data for «Alpine lawn over Grisons slate, 2450m» per hydrological year
The graph below shows the monthly meteorological and climate data for a hydrological year, measured at one of the MeteoSwiss measuring stations near the habitat «Alpine lawn over Grisons slate, 2450m».
Deviations of the annual values from the climate standard values 1991-2020
Measuring station: Binn (1481m), Hydrological year 2025 / 2026
The definitive measured values and deviations for the hydrological year 2025 / 2026 are displayed from 1. October 2026.
| Physical quantity | Annual value | Standard value | Deviation | Unit |
| Precipitation | 91 | 1176 | -1085 | mm |
Source of the basic data: MeteoSwiss
Deviations of the monthly precipitation values from the climate norms 1991-2020
Measuring station: Binn (1481m), Hydrological year 2025 / 2026
The definitive deviations for this December 2025 will be displayed from 1 January 2026.
| month | Monthly value
mm | Standard value
mm | Deviation
mm |
% | Data
% |
| October 2025 | 53.6 | 129.7 | -76.1 | -58.7 | 97.3 |
| November 2025 | 24.3 | 140.5 | -116.2 | -82.7 | 99.8 |
| December 2025 | 13.3 | 22.7 | -9.4 | -41.3 | 99.8 |
| Hydrological year | 91.2 | 292.9 | -201.7 | -68.9 | 98.7 |
| Winter half-year | 91.2 | 292.9 | -201.7 | -68.9 | 98.7 |
Source of the basic data: MeteoSwiss
The more the values for «Data» deviate from 100%, the more cautiously the monthly values and deviations should be interpreted.
Unusual weather, climate and natural events
The following unusual weather, climate and natural events occurred during the hydrological year 2025 / 2026:
| Date | Title, description |
12.11.2025-
14.11.2025 | Zero degree line well above 3000 metres
Die Nullgradgrenze steigt in der Schweiz auf deutlich über 3000m ü.M. |
14.11.2025-
15.11.2025 | Sahara dust (medium intensity)
Saharastaub-Ereignis mit mittlerer Intensität. |
| 21.11.2025 | Snow falls down to the lowlands
Im Winter 2025/2026 fällt erstmals Schnee bis ins Flachland. |
Availability of data
We have been storing the meteo data since 1 December 2023.
Further information
Further information on the measurement data and the graphics can be found
here... (External link to www.obeng.ch, the website of Oberli Engineering GmbH)
Further links
All links point to pages on our website www.obeng.ch.