Weather on September 30 in Ottawa

Historical weather data for September 30 in Ottawa, Canada

Avg High17°C (62°F)
Avg Low7°C (44°F)
Warmest198621°C
Coldest19914°C

Based on 55 years of data from OTTAWA CDA

About This Date

September 30th in Ottawa, Canada typically brings mild fall weather, with average highs around 17°C and lows near 7°C. Over 55 years of records, the warmest September 30th was in 1986 (21°C average), while the coldest was 1991 (4°C) — a 30°F range across recorded history. Rain or other precipitation has occurred on about 40% of September 30th dates historically, with the wettest September 30th recording 1.87" of rain. The last decade has been 2.7°F warmer on this date compared to 20-30 years ago.

The last decade has been 2.7°F warmer on this date compared to 20-30 years ago.

Planning for September 30th in Ottawa? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.

Year by Year History

YearHighLowPrecip
202521°C (70°F)14°C (58°F)--
202424°C (75°F)11°C (51°F)0"
202324°C (75°F)10°C (50°F)0"
202219°C (66°F)2°C (35°F)0"
202117°C (62°F)7°C (44°F)0"
202017°C (62°F)11°C (51°F)1.38"
201916°C (60°F)7°C (44°F)0.32"
201811°C (52°F)6°C (42°F)0.04"
201714°C (58°F)8°C (46°F)0"
201618°C (65°F)11°C (52°F)0"
201515°C (59°F)6°C (43°F)0"
201417°C (62°F)8°C (47°F)0"
201324°C (75°F)8°C (47°F)0"
201213°C (56°F)10°C (50°F)1.87"
201120°C (68°F)8°C (47°F)0.42"
201016°C (60°F)11°C (52°F)1.54"
20099°C (48°F)4°C (39°F)0"
200817°C (62°F)10°C (50°F)0.82"
200718°C (64°F)7°C (44°F)0"
200616°C (61°F)0°C (32°F)0"
200515°C (59°F)2°C (36°F)0.02"
200418°C (65°F)4°C (39°F)0"
200316°C (60°F)4°C (40°F)0.18"
200219°C (66°F)8°C (46°F)1.4"
200119°C (66°F)3°C (38°F)0"
200020°C (68°F)3°C (38°F)0"
199912°C (54°F)10°C (50°F)0.16"
199819°C (67°F)13°C (56°F)1.06"
199716°C (61°F)12°C (53°F)0.16"
199613°C (56°F)6°C (42°F)0"
199522°C (72°F)4°C (40°F)0"
199412°C (54°F)6°C (42°F)0"
19939°C (48°F)3°C (38°F)0"
19927°C (44°F)1°C (34°F)0"
199110°C (50°F)-2°C (28°F)0.32"
199011°C (52°F)9°C (49°F)0.66"
198917°C (62°F)1°C (34°F)0"
198822°C (71°F)6°C (42°F)0"
198717°C (62°F)11°C (51°F)0.58"
198624°C (75°F)17°C (63°F)0.04"
198523°C (74°F)8°C (46°F)1.82"
198414°C (58°F)1°C (34°F)0"
198325°C (77°F)6°C (42°F)0"
198223°C (73°F)9°C (48°F)0"
198110°C (50°F)-1°C (31°F)0"
198019°C (66°F)11°C (52°F)0.02"
197922°C (71°F)12°C (53°F)0"
197819°C (66°F)8°C (46°F)1"
197711°C (51°F)8°C (46°F)0.58"
197614°C (58°F)6°C (43°F)0"
197521°C (70°F)7°C (45°F)0"
197411°C (52°F)5°C (41°F)0"
197317°C (62°F)4°C (40°F)0"
19727°C (45°F)4°C (39°F)1.04"
197120°C (68°F)10°C (50°F)0"

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