Linz, where it's located

The climate of Linz is moderately continental, with cold winters and warm summers.
The city is located in Upper Austria, in the Danube valley, at an altitude of 265 meters (870 feet).
The average temperature of the coldest month (January) is of -0.2 °C (32 °F), that of the warmest month (July) is of 20.4 °C (69 °F). Here are the average temperatures.
Linz - Average temperatures
Min (°C)-3-226101315151172-1
Max (°C)25101621232625201473
Min (°F)272836435055595952453630
Max (°F)364150617073797768574537

Precipitation amounts to 830 millimeters (32.7 inches) per year: so, it is at an intermediate level. It ranges from 50 mm (2 in) in the driest months (February, October) to 105 mm (4.1 in) in the wettest (July). Here is the average precipitation.
Linz - Average precipitation

On average, there are around 1,740 sunshine hours per year. Here are the average sunshine hours per day.
Linz - Sunshine


Best Time

In order to avoid both the winter cold and the summer heat, the best times to visit Linz are spring and autumn, and in particular, the months of May, June and September: daytime temperatures are pleasant, although it's better to bring a sweater and a jacket for the evening. In July and August, the temperature is usually not too hot, however, there is the risk of some very hot days, which can happen, though more rarely, also in the second half of June and in the first half of September.