Appleton, Canada — Weather in September 2026

Climate Overview

Appleton, Canada in September has mild conditions, with highs averaging 17.8°C (64°F) and noticeably cooler mornings. Rain falls on about 12 days this month.

This month falls at the beginning of Autumn.

Daily highs in September gradually drop from around 21°C (70°F) at the start to 16°C (60°F) by month's end.

September sees fairly even rainfall, totalling about 85 mm across the month.

Expect around 9.4h of sunshine at the start of September, decreasing to 6.2h by the end.

The warmest days tend to fall around the 5th, averaging 21.7°C (71°F).

Compared to August, this month is about 5°C cooler with 0 fewer rainy days. Temperatures begin dropping heading into October.

Monthly September Averages

Temperature

18°C / 11°C

Feels Like

16°C / 9°C

Rain

12 days · 84 mm

Sunshine

7.4h / day

Humidity

78% — Humid

Wind

19 km/h

Wind Direction

WSW (258°)

Gusts

44 km/h

Daylight

12.6 h

Cloud Cover

68%

Clear Sky Days

2.7

UV Index

3.9 — Moderate

Dew Point

11°C — Comfortable

Moon Phase

Waxing Crescent · 11%

Climate Charts

Daily averages based on historical data (2016–2025)

Daily Temperature

HighLow

Daily Precipitation

Rainfall

Daily Sunshine

Sunshine

Daily Wind Speed

Wind Speed

Sun Position

Sunrise 06:47

Daylight 12.6h

Sunset 19:25

What to Expect

Keep afternoons flexible as tropical showers are common — they typically clear within an hour.

Rain usually comes in shorter passing showers rather than all-day rain.

2 of the last 5 yearly records were warmer than this month's long-run average.

Compare Months

Month	Temp	Feels Like	Rain	Sun	Humidity	UV	Status	Details
January	-1°C / -7°C	-6°C / -13°C	13days (98 mm) Wet	4h Fair	80% Humid	1.5 Low	Poor	View Details
February	-1°C / -9°C	-6°C / -14°C	12days (102 mm) Wet	5.6h Fair	77% Humid	2.4 Moderate	Poor	View Details
March	2°C / -5°C	-3°C / -10°C	15days (107 mm) Wet	6.5h Fair	77% Humid	3.2 Moderate	Poor	View Details
April	6°C / -1°C	2°C / -6°C	13days (99 mm) Wet	7.3h Good	78% Humid	4.3 Moderate	Poor	View Details
May	12°C / 3°C	9°C / -1°C	13days (86 mm) Wet	8.2h Good	75% Muggy	4.9 Moderate	Poor	View Details
June best	19°C / 9°C	17°C / 6°C	13days (84 mm) Wet	9h Good	76% Humid	5.4 High	Good	View Details
July best	23°C / 14°C	23°C / 13°C	12days (86 mm) Wet	10h Excellent	76% Humid	6.1 High	Excellent	View Details
August best	23°C / 15°C	23°C / 14°C	12days (87 mm) Wet	9.2h Good	76% Humid	5.2 High	Excellent	View Details
September best	18°C / 11°C	16°C / 9°C	12days (84 mm) Wet	7.4h Good	78% Humid	3.9 Moderate	Good	View Details
October	12°C / 6°C	9°C / 2°C	12days (89 mm) Wet	6h Fair	81% Humid	2.5 Moderate	Fair	View Details
November	6°C / 1°C	2°C / -3°C	16days (136 mm) Wet	3.8h Poor	83% Humid	1.4 Low	Poor	View Details
December	2°C / -3°C	-3°C / -8°C	14days (115 mm) Wet	3.4h Poor	82% Humid	1.1 Low	Poor	View Details

What to Wear

Bundle up with a warm coat, scarf, and closed-toe shoes. Thermal layers underneath give flexibility between indoors and outdoors.

A waterproof jacket or compact umbrella is recommended for occasional showers.

Packing List

Layered clothingLight jacketUmbrellaWaterproof jacketComfortable walking shoes

Frequently Asked Questions

Expand all

Is September a good time to visit Appleton?

September is typically good for visiting Appleton, with average highs of 18°C (64°F) and around 12 rainy days. Appleton, Canada in September has mild conditions, with highs averaging 17.8°C (64°F) and noticeably cooler mornings. Ra

Does it rain a lot in Appleton in September?

Appleton typically sees around 12 rainy days in September with 84 mm (3.3 in) of total rainfall. Pack a waterproof jacket.

Does it get cold at night in Appleton in September?

Nights in Appleton during September are cool at around 11°C (51°F). Bring a jacket or sweater for evenings.

What should I pack for Appleton in September?

With highs of 18°C (64°F) and lows of 11°C (51°F) in September, we recommend: Layered clothing, Light jacket, Umbrella, Waterproof jacket, Comfortable walking shoes. Comfortable walking shoes are essential.

Is September among the best months weather-wise in Appleton?

Yes, September offers some of the best weather conditions in Appleton with comfortable temperatures and lower chances of rain.

What is the UV index in Appleton in September?

The average UV index in Appleton during September is 4 (moderate). Sunscreen and sunglasses are recommended during midday hours.

How many hours of daylight are there in Appleton in September?

Appleton gets approximately 13 hours of daylight per day in September, with around 7 hours of sunshine.

Does it snow in Appleton in September?

Snow is uncommon in Appleton during September based on 10-year climate averages.

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