Climate Insights for New Ulm

The climate in New Ulm is cool. The average annual temperature is 9°C and approximately 946mm of precipitation falls per year. May is the wettest month, receiving around 136mm of rainfall. New Ulm is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, June, August. The coldest months are January, February, December, when temperatures can drop to -12°C. Snowfall occurs from January to December, with around 122cm accumulating over the season.

New Ulm has a wide annual temperature range, spanning 41°C from the coldest to warmest months. The warmest month is July, when average highs reach 29°C and the mean temperature sits around 23°C. The coldest month is January, when overnight lows fall to -12°C and the daily average is -8°C. On average, daily temperatures fluctuate by about 10°C between overnight lows and afternoon highs. The sharpest temperature change occurs between February and March, with a 9°C shift in average temperatures.

New Ulm is a moderately rainy area, receiving approximately 946mm of precipitation annually, which averages out to around 79mm per month. The wettest month is May, averaging 136mm of rainfall. June and July also tend to see above-average precipitation. The driest month is February, with just 27mm. That's 109mm less than May, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic. Snowfall is a regular feature from January to December, with around 122cm accumulating over the season. January typically sees the most snow at around 24cm.

New Ulm is mildly breezy, with an average annual wind speed of 15km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is April, averaging 17km/h, though still comfortable for most outdoor activities. The calmest conditions occur in July, with average winds dropping to 12km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 5km/h gap between the calmest and windiest months. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 16km/h in winter, 16km/h in spring, 13km/h in summer, 16km/h in autumn.

It is currently summer in New Ulm, which began on June 21, 2026. New Ulm is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in July at around 29°C, while the coldest stretch bottoms out in January near -12°C. Autumn is next, beginning on September 23, 2026 (7 days from now).

The best time to visit New Ulm is during September, when the weather is most comfortable for travellers. During these months, average temperatures hover around 19°C with modest rainfall averaging 93mm per month. By contrast, July can be uncomfortably hot with highs reaching 29°C, while January is the coldest period with lows dropping to -12°C. Despite being the best months overall, some rain is still likely. Pack a waterproof layer and plan a mix of indoor and outdoor activities.

The table below shows monthly climate averages for New Ulm based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.