The highest day temperature in July 2025 was 100°F. The lowest night temperature was 46°F. The average values for day and night temperatures during July were 75.1°F и 56.4°F respectivly.

You can expect various weather conditions during July. Be ready for sunny, cloudy or even gloomy days.

Precipitation total in July for Vianden is 2.0 in. It makes july the most rainy month of the year.

The average wind speed in July is 7.1 mph. It makes July one of the most windless months of the year for Vianden.

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Vianden in July is 9.2 hours.