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Weather on May 21 in Montreal

Historical weather data for May 21 in Montreal, Canada

Avg High21°C (69°F)
Avg Low12°C (53°F)
Warmest202127°C
Coldest19908°C

Based on 51 years of data from MCTAVISH

About This Date

May 21st in Montreal, Canada typically brings mild spring weather, with average highs around 21°C and lows near 12°C. Over 51 years of records, the warmest May 21st was in 2021 (27°C average), while the coldest was 1990 (8°C) — a 34°F range across recorded history. Rain or other precipitation has occurred on about 31% of May 21st dates historically, with the wettest May 21st recording 3.25" of rain. The last decade has been 8.3°F warmer on this date compared to 20-30 years ago.

The last decade has been 8.3°F warmer on this date compared to 20-30 years ago.

Planning for May 21st in Montreal? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.

Year by Year History

YearHighLowPrecip (mm)
202618°C (64°F)6°C (43°F)--
202517°C (63°F)9°C (48°F)--
202323°C (73°F)9°C (49°F)1 mm
202232°C (89°F)19°C (66°F)1 mm
202132°C (89°F)21°C (70°F)0 mm
202025°C (77°F)14°C (58°F)0 mm
201916°C (61°F)8°C (46°F)0 mm
201825°C (77°F)11°C (52°F)0 mm
201721°C (69°F)10°C (50°F)2 mm
201624°C (76°F)15°C (59°F)0 mm
201520°C (68°F)9°C (49°F)0 mm
201423°C (74°F)12°C (54°F)0 mm
201319°C (66°F)13°C (55°F)10 mm
201228°C (83°F)19°C (67°F)0 mm
201123°C (74°F)12°C (53°F)0 mm
201022°C (71°F)12°C (53°F)--
200929°C (85°F)14°C (57°F)3 mm
200813°C (55°F)7°C (45°F)4 mm
200718°C (64°F)6°C (43°F)0 mm
200613°C (55°F)7°C (45°F)23 mm
200513°C (55°F)8°C (47°F)0 mm
200417°C (63°F)12°C (53°F)0 mm
200317°C (62°F)8°C (47°F)8 mm
200214°C (57°F)6°C (42°F)0 mm
200125°C (77°F)15°C (59°F)0 mm
200016°C (61°F)9°C (49°F)0 mm
199921°C (69°F)8°C (47°F)0 mm
199818°C (64°F)8°C (46°F)0 mm
199715°C (59°F)7°C (45°F)3 mm
199229°C (85°F)16°C (61°F)0 mm
199125°C (77°F)13°C (56°F)0 mm
199011°C (52°F)4°C (39°F)0 mm
198922°C (71°F)16°C (61°F)9 mm
198823°C (73°F)16°C (60°F)3 mm
198720°C (68°F)11°C (52°F)0 mm
198617°C (63°F)11°C (51°F)4 mm
198520°C (68°F)14°C (57°F)0 mm
198420°C (68°F)10°C (50°F)0 mm
198319°C (67°F)12°C (54°F)0 mm
198217°C (62°F)8°C (46°F)0 mm
198123°C (73°F)12°C (54°F)3 mm
198026°C (79°F)12°C (54°F)0 mm
197923°C (74°F)13°C (56°F)83 mm
197820°C (68°F)11°C (52°F)0 mm
197731°C (87°F)17°C (63°F)0 mm
197613°C (55°F)7°C (44°F)15 mm
197528°C (82°F)16°C (61°F)0 mm
197417°C (63°F)12°C (53°F)0 mm
197312°C (54°F)10°C (50°F)16 mm
197228°C (83°F)15°C (59°F)0 mm
197121°C (69°F)14°C (57°F)0 mm

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