Centro Funzionale Regionale - Valle d'Aosta - Monitoriamo il clima, tuteliamo il territorio e la tua sicurezza

Weekly weather forecast

Forecast for the next three weeks

Based on the ECMWF monthly forecast system
Issue on martedì 09 settembre 2025

The weekly forecast includes a general and not detailed forecast, which can give an idea of the overall and average expected conditions, and how much this situation can differ from the typical climatological conditions of the period.

We highlight that the reliability of the weekly forecast is generally medium-low. The first week is usually the most reliable, whereas often the third week is more similar to the climatology of the period.

The goal of this section is to give an idea of the average weekly behaviour which differ from the evolution of individial meteorological events.

Download the forecast in pdf

Forecast of the week from
lunedì 15 settembre e domenica 21 settembre
La circolazione dovrebbe essere caratterizzata da correnti in quota sud-occidentali, con temperature leggermente superiori alle medie del periodo e precipitazioni inferiori alle attese.
General values compared to the average of the period
  • + Temp. at 1500m
  • -- Precipitation
Forecast of the week from
lunedì 22 settembre e domenica 28 settembre
La situazione dovrebbe essere dominata da correnti occidentali, con temperature nelle medie climatologiche e precipitazioni lievemente inferiori alla norma.
General values compared to the average of the period
  • = Temp. at 1500m
  • - Precipitation
Forecast of the week from
lunedì 29 settembre e domenica 05 ottobre
La circolazione potrebbe essere all'insegna di correnti atlantiche, con temperature e precipitazioni in linea con la climatologia.
General values compared to the average of the period
  • = Temp. at 1500m
  • = Precipitation

Legend to read correctly

symbols and colours in the previous paragraphs
Temperatures
  • ++ anomalies greater than 3°C compared to the climate of the period
  • + anomalies greater than 1°C compared to the climate of the period
  • = temperature anomaly between -1 and 1°C
  • - anomalies less than -1°C compared to the climate of the period
  • -- anomalies less than -3°C compared to the climate of the period
Precipitation
  • ++ anomalies greater than 30mm/week compared to the climate of the period
  • + anomalies greater than 10mm/week compared to the climate of the period
  • = precipitation anomaly between -10 and 10mm/week compared to the climate of the period
  • - anomalies less than -10mm/week compared to the climate of the period
  • -- anomalies less than -30mm/week compared to the climate of the period