Weather on September 23 in Ottawa

Historical weather data for September 23 in Ottawa, Canada

Avg High18°C (65°F)
Avg Low9°C (48°F)
Warmest201721°C
Coldest19746°C

Based on 55 years of data from OTTAWA CDA

About This Date

September 23rd in Ottawa, Canada typically brings mild fall weather, with average highs around 18°C and lows near 9°C. Over 55 years of records, the warmest September 23rd was in 2017 (21°C average), while the coldest was 1974 (6°C) — a 28°F range across recorded history. Rain or other precipitation has occurred on about 44% of September 23rd dates historically, with the wettest September 23rd recording 1.82" of rain. The last decade has been 4.0°F warmer on this date compared to 20-30 years ago.

The last decade has been 4.0°F warmer on this date compared to 20-30 years ago.

Planning for September 23rd in Ottawa? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.

Year by Year History

YearHighLowPrecip
202523°C (74°F)16°C (61°F)--
202423°C (74°F)13°C (56°F)0.05"
202322°C (72°F)7°C (45°F)0"
202213°C (56°F)4°C (40°F)0"
202123°C (73°F)16°C (60°F)1.5"
202023°C (74°F)12°C (54°F)0"
201926°C (78°F)14°C (58°F)0.82"
201817°C (62°F)4°C (39°F)0"
201728°C (83°F)14°C (57°F)0"
201618°C (64°F)7°C (44°F)0.12"
201523°C (74°F)9°C (48°F)0"
201417°C (63°F)6°C (43°F)0"
201313°C (55°F)4°C (40°F)0"
201215°C (59°F)8°C (46°F)0"
201123°C (74°F)9°C (49°F)0"
201014°C (57°F)8°C (46°F)0.88"
200922°C (72°F)13°C (55°F)0.73"
200821°C (69°F)3°C (38°F)0"
200721°C (70°F)9°C (49°F)0"
200619°C (67°F)12°C (53°F)0.83"
200518°C (64°F)8°C (47°F)0"
200425°C (77°F)15°C (59°F)0"
200321°C (70°F)17°C (62°F)0.31"
200219°C (67°F)9°C (49°F)0"
200123°C (73°F)13°C (55°F)0"
200013°C (55°F)9°C (49°F)1.03"
199921°C (70°F)4°C (39°F)0.07"
199815°C (59°F)4°C (39°F)0"
199714°C (57°F)11°C (52°F)0.06"
199616°C (60°F)6°C (43°F)0"
199514°C (57°F)4°C (39°F)0"
199419°C (66°F)13°C (55°F)0"
199321°C (69°F)9°C (49°F)0.64"
199210°C (50°F)3°C (38°F)0"
199119°C (67°F)11°C (52°F)0.28"
199013°C (56°F)7°C (44°F)0.1"
198911°C (51°F)7°C (44°F)0"
198822°C (71°F)13°C (55°F)0.04"
198719°C (67°F)10°C (50°F)0.24"
198616°C (61°F)12°C (53°F)0.24"
198527°C (80°F)13°C (55°F)0"
198425°C (77°F)11°C (51°F)0.03"
198314°C (58°F)4°C (39°F)0"
198216°C (61°F)11°C (51°F)0.02"
198115°C (59°F)6°C (43°F)1.82"
198016°C (60°F)13°C (55°F)0"
197915°C (59°F)3°C (38°F)0"
197818°C (64°F)2°C (36°F)0"
197716°C (60°F)9°C (49°F)0"
197615°C (59°F)3°C (38°F)0.38"
197517°C (63°F)8°C (46°F)0.25"
19749°C (48°F)2°C (35°F)0"
197315°C (59°F)7°C (44°F)0.08"
197216°C (60°F)1°C (34°F)0"
197117°C (62°F)8°C (47°F)0.64"

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