Lillehammer, where it's located

The climate of Lillehammer is Baltic, that is, moderately continental, with cold winters, during which the average temperature is a few degrees below freezing, and mild summers.
The city is located in southern Norway, 140 km (85 mi) north of Oslo and 250 meters (820 ft) above sea level.
The average temperature of the coldest months (January, February) is of -5.6 °C (22 °F), that of the warmest month (July) is of 16.7 °C (62 °F). The temperature dropped to -31 °C (-24 °F) in January 1987, while it reached 32.5 °C (90.5 °F) in July 2018. Here are the average temperatures.
Lillehammer - Average temperatures
Min (°C)-8-8-5049121162-3-7
Max (°C)-4-3310152022201571-2
Min (°F)181823323948545243362719
Max (°F)252737505968726859453428

Precipitation amounts to 720 millimeters (28.3 inches) per year: so, it is at an intermediate level. It ranges from 35 mm (1.4 in) in the driest months (February, April) to 95 mm (3.7 in) in the wettest (August). Here is the average precipitation.
Lillehammer - Average precipitation

On average, there are around 1,540 sunshine hours per year. Here are the average sunshine hours per day.
Lillehammer - Sunshine


Best Time

The best time to visit Lillehammer is the summer, from June to August, since it is the mildest season. However, you must take into account some rainy days and a bit of cold at night.