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 16 dicembre 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 22 dicembre e domenica 28 dicembre
La situazione dovrebbe essere caratterizzata dalla discesa di una saccatura sul Mediterraneo, con temperature leggermente inferiori alle medie e precipitazioni in linea con le attese.
General values compared to the average of the period
  • - Temp. at 1500m
  • = Precipitation
Forecast of the week from
lunedì 29 dicembre e domenica 04 gennaio
La circolazione in quota dovrebbe essere all'insegna di correnti nord-occidentali, con temperature leggermente inferiori alle medie del periodo e precipitazioni leggermente inferiori alla norma.
General values compared to the average of the period
  • - Temp. at 1500m
  • - Precipitation
Forecast of the week from
lunedì 05 gennaio e domenica 11 gennaio
Le correnti atlantiche potrebbero dominare la situazione, 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