Weather and climate data: Monthly data per hydrological year
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: Egolzwil (523m), 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 | 200 | 989 | -789 | mm |
Source of the basic data: MeteoSwiss
Deviations of the monthly precipitation values from the climate norms 1991-2020
Measuring station: Egolzwil (523m), Hydrological year 2025 / 2026
The definitive data for January 2026 will be displayed from 1 February 2026.
| month | Monthly value
mm | Standard value
mm | Deviation
mm |
% | Data
% |
| October 2025 | 87.0 | 80.7 | +6.3 | +7.8 | 98.1 |
| November 2025 | 88.0 | 66.2 | +21.8 | +32.9 | 99.9 |
| December 2025 | 1.5 | 74.0 | -72.5 | -98.0 | 98.9 |
| January 2026 | 23.0 | 16.9 | +6.1 | +35.9 | 79.5 |
| Hydrological year | 199.5 | 237.8 | -38.3 | -16.1 | 97.2 |
| Winter half-year | 199.5 | 237.8 | -38.3 | -16.1 | 97.2 |
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 exceptional 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. |
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.
Direct link