Climate Overview
The climate in 100 Mile House is cool. The average annual temperature is 5°C and approximately 558mm of precipitation falls per year. June is the wettest month, receiving around 68mm of rainfall. 100 Mile House 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 February, December, January, when temperatures can drop to -9°C. Snowfall occurs from January to December, with around 141cm accumulating over the season.
Temperature
Temperatures in 100 Mile House vary considerably across the year, with a 33°C difference between the coldest and warmest months. July is the warmest month, though highs remain moderate at 24°C with a mean of 17°C. The coldest month is February, when overnight lows fall to -9°C and the daily average is -5°C. On average, daily temperatures fluctuate by about 10°C between overnight lows and afternoon highs. The sharpest temperature change occurs between April and May, with a 6°C shift in average temperatures.
Precipitation
100 Mile House is a relatively dry area, receiving approximately 558mm of precipitation annually, which averages out to around 47mm per month. The wettest month is June, averaging 68mm of rainfall. September and May also tend to see above-average precipitation. The driest month is March, with just 25mm. That's 43mm less than June, 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 141cm accumulating over the season. February typically sees the most snow at around 29cm.
Wind
100 Mile House 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 12km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 4km/h 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, 15km/h in spring, 13km/h in summer, 15km/h in autumn.
Seasons
89 days until Summer
It is currently spring in 100 Mile House, which began on March 20, 2026. 100 Mile House 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 February near -9°C. Summer is next, beginning on June 21, 2026 — 89 days from now.
Spring
Temperatures range from -4 to 18°C. Rainfall is relatively light, with around 113mm over the season and a monthly average of 38mm. Winds are generally light, averaging 15km/h. Light layers work well as temperatures warm through the season — a great time to be outdoors.
Summer
Temperatures range from 8 to 24°C. Precipitation is moderate at around 159mm for the season, averaging 53mm per month. Winds are generally light, averaging 13km/h. Comfortable clothing with a light layer for cooler evenings is all you need.
Autumn
Temperatures range from -3 to 18°C. Precipitation is moderate at around 161mm for the season, averaging 54mm per month. Expect around 35cm of snow accumulation during this period. Winds are generally light, averaging 15km/h. Layered clothing works best as temperatures gradually cool — enjoy the crisp air and changing scenery.
Winter
Temperatures range from -9 to -1°C. Rainfall is relatively light, with around 125mm over the season and a monthly average of 42mm. Expect around 83cm of snow accumulation during this period. Winds are generally light, averaging 15km/h. Heavy layering and insulated outerwear are essential — exposed skin should be minimised outdoors.
Best Time to Visit
The best time to visit 100 Mile House is during July and August, when the weather is most comfortable for travellers. During these months, average temperatures hover around 17°C with modest rainfall averaging 46mm per month. By contrast, February can be quite cold with temperatures dropping to -9°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.
Monthly Climate Data
The table below shows monthly climate averages for 100 Mile House 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.
