Tagish Weather in September
September in Tagish brings moderate temperatures around 12°C (54°F) during the day, dropping to 3°C (37°F) at night, with the most rainfall of the year.
Rainfall in Tagish in September
As the month with the most rain, you'll want to have an umbrella with you to manage the frequent showers. You can typically expect 9 days of rain this month, averaging around 61 mm (2.4 in). The rainfall pattern this month is fairly balanced. Showers tend to be moderate rather than extreme.
Temperature in Tagish in September
Daytime highs in Tagish in September reach 12°C (54°F), with nights around 3°C (37°F). This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. With overnight lows of 3°C (37°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.
Sunshine in Tagish in September
The area experiences a moderate amount of sunshine, with approximately 133 hours of sunlight expected. This means a decent mix of sun and overcast.If you prefer dry days with pleasant temperatures, June, July and August typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Tagish Temperature in September
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Tagish Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Tagish - and find the best time to visit.
Daily Historical Temperatures
49-year average (1976-2025)
Based on our historical records, temperatures in Tagish typically drop from around 14°C (57°F) at the start of September to approximately 9°C (48°F) by the end. Nights are cold, with lows typically ranging from 0°C (32°F) to 5°C (41°F).
Average temperatures in September
Historical weather records for Tagish in September
Browse day-by-day weather records for Tagish spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Tagish historical weather extremes in September
Our historical data for Tagish spans 2006 to 2025, revealing these weather extremes.
- Tagish recorded its highest September temperature of 26°C (79°F) on September 4, 2025.
- On September 24, 2010, Tagish saw its coldest September day with temperatures maxing out at 1°C (34°F).
- Tagish registered its coldest September night on September 29, 2009, with temperatures dropping to -7°C (19°F).
- The heaviest September precipitation occurred on September 5, 2014, when 19 mm (0.7 in) of precipitation fell.
Best Places in Canada in September
Find out more about the weather in Canada and which places have the best travel conditions in this month. See all of Canada in September →
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Tagish in September
The weather can swing between comfortable and chilly in September, so flexibility is key. Pack a variety of tops, at least one warm layer, and both shorts and long pants. This gives you options no matter what the day brings. Wet weather is likely, so pack waterproof gear for multiple rainy days. Bring sunglasses since you'll have some sunny periods throughout the month
What To Do in Tagish in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming5/10 -
Cycling6/10 -
Walking6/10 -
Camping4/10 -
Outdoor sports6/10
Tagish 3-Day Forecast
Temperature Rainfall Sunshine Humidity
See the full Tagish climate overview or explore weather in Canada.
Popular in September
Where to go in September - average daytime high across popular destinations.
Toronto
22°C (72°F) Niagara Falls23°C (73°F) Montréal
22°C (72°F) Ottawa22°C (72°F) Quebec City
20°C (68°F) Vancouver19°C (66°F) Calgary19°C (66°F) Whistler15°C (59°F) 
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