MontréalCanada · North America · September

September climate

CityCultureFood

September in Montréal

Canada · North America

Mild days with cool nights and good sunshine.

One of the best months here

Daytime high

70°F

Lows around 55°F

Rain

Several rainy days

Sun

6 h/day

Air feel

Comfortable

When to visit

Month-by-month fit

Best

Switch month

Temperature

Pleasant by day, brisk at night.

70°Ftypical September high

Typical range

Precipitation

Several rainy days, with mixed-length spells. About 10 wet days, the lowest monthly average.

33%wet-day frequency

Precip amountWet-day chanceSnowfall

Sunshine

Good sunshine this month.

6.1 hSeptember sunshine

Heat & humidity by month

ComfortableSeptember

Easy airWarm airHumid air

Hourly temperature pattern

In September, afternoons feel about 65° and nights feel near 54°.

FrigidFreezingVery coldColdCoolComfortableWarmNight hours

Clear sky

Partly cloudy skies this month.

46%September Clear sky

Clear skyCloud

Wind pattern

Calm winds are typical in September.

7 mphSeptember Light breeze

More detailIncludes daypart comfort

Typical September day

September late afternoons are around 69°F, easing to about 64°F in early evening.

Avg temp Typical range

Morning60°F

Rain14%

Cloud55%

Humid airLow

Sun intensityLow

Best window

Midday67°F

Rain15%

Cloud58%

Humid airLow

Sun intensityModerate

Late afternoon69°F

Rain15%

Cloud59%

Humid airLow

Sun intensityModerate

Early evening63°F

Rain14%

Cloud53%

Humid airLow

Sun intensityMinimal

Data table

View month-by-month numbers

Month	High°F	Low°F	Rainin	Wet days	Sunh	Humidity%
Jan	24	10	2.8	10	3.3	76
Feb	28	12	2.5	10	4.5	74
Mar	37	22	2.9	11	5.3	70
Apr	51	36	4.1	11	5.9	65
May	65	49	3.6	12	7.4	66
Jun	75	59	4.2	13	8.0	70
Jul	79	64	3.5	12	8.8	73
Aug	77	62	3.7	12	7.9	75
Sep	70	55	3.4	10	6.1	77
Oct	56	44	4.3	12	4.6	77
Nov	43	32	3.4	11	2.8	77
Dec	31	19	3.6	12	2.7	80

Similar climates

Want a side-by-side climate view? Compare Montréal with Halifax.

Climate data notePlanning guidance, not a forecast

Typical monthly values are based on long-term climate records. Useful for planning, not a forecast. Check the weather before you travel.

Sunshine: source type is not yet identified at metric level.

Local microclimates can vary by beach, neighborhood, trail, or elevation.

Last updated: Jun 1, 2026

Data & methodology

Month

High°F

Low°F

Rainin

Wet days

Sunh

Humidity%

Jan

2.8

3.3

Feb

2.5

4.5

Mar

2.9

5.3

Apr

4.1

5.9

May

3.6

7.4

Jun

4.2

8.0

Jul

3.5

8.8

Aug

3.7

7.9

Sep

3.4

6.1

Oct

4.3

4.6

Nov

3.4

2.8

Dec

3.6

2.7

Month	High°F	Low°F	Rainin	Wet days	Sunh	Humidity%
Jan	24	10	2.8	10	3.3	76
Feb	28	12	2.5	10	4.5	74
Mar	37	22	2.9	11	5.3	70
Apr	51	36	4.1	11	5.9	65
May	65	49	3.6	12	7.4	66
Jun	75	59	4.2	13	8.0	70
Jul	79	64	3.5	12	8.8	73
Aug	77	62	3.7	12	7.9	75
Sep	70	55	3.4	10	6.1	77
Oct	56	44	4.3	12	4.6	77
Nov	43	32	3.4	11	2.8	77
Dec	31	19	3.6	12	2.7	80

Month	High°F	Low°F	Rainin	Wet days	Sunh	Humidity%
Jan	24	10	2.8	10	3.3	76
Feb	28	12	2.5	10	4.5	74
Mar	37	22	2.9	11	5.3	70
Apr	51	36	4.1	11	5.9	65
May	65	49	3.6	12	7.4	66
Jun	75	59	4.2	13	8.0	70
Jul	79	64	3.5	12	8.8	73
Aug	77	62	3.7	12	7.9	75
Sep	70	55	3.4	10	6.1	77
Oct	56	44	4.3	12	4.6	77
Nov	43	32	3.4	11	2.8	77
Dec	31	19	3.6	12	2.7	80

Month	High°F	Low°F	Rainin	Wet days	Sunh	Humidity%
Jan	24	10	2.8	10	3.3	76
Feb	28	12	2.5	10	4.5	74
Mar	37	22	2.9	11	5.3	70
Apr	51	36	4.1	11	5.9	65
May	65	49	3.6	12	7.4	66
Jun	75	59	4.2	13	8.0	70
Jul	79	64	3.5	12	8.8	73
Aug	77	62	3.7	12	7.9	75
Sep	70	55	3.4	10	6.1	77
Oct	56	44	4.3	12	4.6	77
Nov	43	32	3.4	11	2.8	77
Dec	31	19	3.6	12	2.7	80

Month	High°F	Low°F	Rainin	Wet days	Sunh	Humidity%
Jan	24	10	2.8	10	3.3	76
Feb	28	12	2.5	10	4.5	74
Mar	37	22	2.9	11	5.3	70
Apr	51	36	4.1	11	5.9	65
May	65	49	3.6	12	7.4	66
Jun	75	59	4.2	13	8.0	70
Jul	79	64	3.5	12	8.8	73
Aug	77	62	3.7	12	7.9	75
Sep	70	55	3.4	10	6.1	77
Oct	56	44	4.3	12	4.6	77
Nov	43	32	3.4	11	2.8	77
Dec	31	19	3.6	12	2.7	80

Month	High°F	Low°F	Rainin	Wet days	Sunh	Humidity%
Jan	24	10	2.8	10	3.3	76
Feb	28	12	2.5	10	4.5	74
Mar	37	22	2.9	11	5.3	70
Apr	51	36	4.1	11	5.9	65
May	65	49	3.6	12	7.4	66
Jun	75	59	4.2	13	8.0	70
Jul	79	64	3.5	12	8.8	73
Aug	77	62	3.7	12	7.9	75
Sep	70	55	3.4	10	6.1	77
Oct	56	44	4.3	12	4.6	77
Nov	43	32	3.4	11	2.8	77
Dec	31	19	3.6	12	2.7	80

Month	High°F	Low°F	Rainin	Wet days	Sunh	Humidity%
Jan	24	10	2.8	10	3.3	76
Feb	28	12	2.5	10	4.5	74
Mar	37	22	2.9	11	5.3	70
Apr	51	36	4.1	11	5.9	65
May	65	49	3.6	12	7.4	66
Jun	75	59	4.2	13	8.0	70
Jul	79	64	3.5	12	8.8	73
Aug	77	62	3.7	12	7.9	75
Sep	70	55	3.4	10	6.1	77
Oct	56	44	4.3	12	4.6	77
Nov	43	32	3.4	11	2.8	77
Dec	31	19	3.6	12	2.7	80