Climate Insights for Arnold

The climate in Arnold is cool. The average annual temperature is 5°C and approximately 869mm of precipitation falls per year. September is the wettest month, receiving around 105mm of rainfall. Arnold is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, August, June. The coldest months are January, February, December, when temperatures can drop to -14°C. Snowfall occurs from January to December, with around 191cm accumulating over the season.

Arnold has a wide annual temperature range, spanning 38°C from the coldest to warmest months. July is the warmest month, though highs remain moderate at 24°C with a mean of 19°C. The coldest month is January, when overnight lows fall to -14°C and the daily average is -11°C. Daily temperature variation is modest, with an average difference of 8°C between highs and lows. The sharpest temperature change occurs between October and November, with a 8°C shift in average temperatures.

Arnold is a moderately rainy area, receiving approximately 869mm of precipitation annually, which averages out to around 72mm per month. The wettest month is September, averaging 105mm of rainfall. July and June also tend to see above-average precipitation. The driest month is January, with just 25mm. That's 79mm less than September, the wettest month. Precipitation varies noticeably between seasons, with the second half (July to December) of the year generally seeing more rainfall. Snowfall is a regular feature from January to December, with around 191cm accumulating over the season. December typically sees the most snow at around 45cm.

Arnold is mildly breezy, with an average annual wind speed of 14km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is November, averaging 16km/h, though still comfortable for most outdoor activities. The calmest conditions occur in July, with average winds dropping to 11km/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 15km/h in winter, 14km/h in spring, 12km/h in summer, 15km/h in autumn.

It is currently summer in Arnold, which began on June 21, 2026. Arnold 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 24°C, while the coldest stretch bottoms out in January near -14°C. Autumn is next, beginning on September 23, 2026 (6 days from now).

The best time to visit Arnold is during June and August, when the weather is most comfortable for travellers. During these months, average temperatures hover around 17°C with modest rainfall averaging 96mm per month. By contrast, July can be uncomfortably hot with highs reaching 24°C, while January is the coldest period with lows dropping to -14°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 Arnold 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.