Prague Weather in September
In September, Prague averages a high of 20°C (68°F) and a low of 10°C (50°F), based on 55 years of historical weather data from PRAHA-KLEMENTINUM.
20°C
Average high
68°F
10°C
Average low
50°F
33°C
Record high
92°F · 2024
0°C
Record low
32°F · 1977
What to Expect in Prague in September
Typical September days in Prague reach 20°C (68°F) during the afternoon and cool to around 10°C (50°F) overnight. On average, measurable rain falls on about 31% of days this month. Over the past 55 years, September temperatures in Prague have ranged from a record high of 33°C (2024) down to a record low of 0°C (1977).
For a day-by-day look or other months, see the full Prague weather history.