Weather/climate: Monthly data per hydrological year, measuring station «Col des Mosses, 1414m asl»
In the graph below, temperature, precipitation and sunshine duration can be displayed for numerous MeteoSwiss measuring stations. Incl. comparison with the climate standard values 1961-1990, 1981-2010 or 1991-2020. Scope: monthly data for one hydrological year.
Deviations of the annual values from the climate standard values 1991-2020
Measuring station: Col des Mosses (1414m), Hydrological year 2026 / 2027
The definitive measured values and deviations for the hydrological year 2026 / 2027 are displayed from 1. October 2027.
| Physical quantity | Annual value | Standard value | Deviation | Unit |
| Precipitation | 157 | 1577 | -1420 | mm |
Source of the basic data: MeteoSwiss
Deviations of the monthly precipitation values from the climate norms 1991-2020
Measuring station: Col des Mosses (1414m), Hydrological year 2026 / 2027
The definitive data for November 2026 will be displayed from 1 December 2026.
| month | Monthly value
mm | Standard value
mm | Deviation
mm |
% | Σ Dev.
mm |
| October 2026 | 88.2 | 116.5 | -28.3 | -24.3 | -28.30 |
| November 2026 | 68.8 | 57.5 | +11.3 | +19.6 | -17.04 |
| Hydrological year | 157.0 | 174.0 | -17.0 | -9.8 | |
| Winter half-year | 157.0 | 174.0 | -17.0 | -9.8 | |
Source of the basic data: MeteoSwiss
Unusual weather, climate and natural events
The following exceptional weather, climate and natural events occurred during the hydrological year 2026 / 2027:
| Date | Title, description |
| 01.10.2026 | Drought situation
The winter of 2025/26, which saw little snow, and the various heatwaves of the summer of 2026 led to an acute drought, which left its mark on the landscape and caused streams and springs to dry up.
Current precipitation deficits for the period 1 October 2025 – 30 September 2026:
- Grimsel Hospiz (1980m) = 460mm / 27.1%
- Napf (1406m) = 490mm / 32.4%
- Koppigen (486m) = 327mm / 31.8%
Basis: Climate norm values 1991–2020, measurement data from MeteoSchweiz.
A few minor rainfall events will not be enough to make up for these deficits. |
Origin of the data
The graphics are based on the measurement data that MeteoSwiss collects every 10 minutes and makes available for use in non-commercial applications.
The measured values are instantaneous values (e.g. temperature) or ten-minute totals (e.g. precipitation and sunshine).
Verfügbarkeit der Daten
We have been storing the measurement data since 1 December 2023.
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