Weather on March 18 in Ottawa

Historical weather data for March 18 in Ottawa, Canada

Avg High2°C (36°F)
Avg Low-8°C (18°F)
Warmest201213°C
Coldest1993-16°C

Based on 56 years of data from OTTAWA CDA

About This Date

March 18th in Ottawa, Canada typically brings cold spring weather, with average highs around 2°C and lows near -8°C. Over 56 years of records, the warmest March 18th was in 2012 (13°C average), while the coldest was 1993 (-16°C) — a 52°F range across recorded history. Precipitation has occurred on 39% of recorded March 18th dates, with snow falling 27% of the time (heaviest snowfall: 3.5"). The last decade has been 1.3°F cooler on this date compared to 20-30 years ago.

The last decade has been 1.3°F cooler on this date compared to 20-30 years ago.

Planning for March 18th in Ottawa? Bundle up with warm layers and protect extremities from the cold. Consider bringing rain gear or an umbrella. Check road conditions if traveling, as snow is possible.

Year by Year History

YearHighLowPrecip
2026-4°C (24°F)-16°C (4°F)--
20257°C (45°F)-4°C (24°F)--
20242°C (36°F)-1°C (30°F)0"
20233°C (38°F)-6°C (22°F)0.02"
202210°C (50°F)1°C (34°F)0"
20214°C (40°F)-6°C (22°F)0"
20204°C (40°F)-4°C (25°F)0"
2019-2°C (29°F)-13°C (8°F)0"
2018-4°C (24°F)-18°C (-1°F)0"
20170°C (32°F)-14°C (6°F)0"
20163°C (37°F)-5°C (23°F)0"
2015-4°C (25°F)-12°C (11°F)0.02"
2014-3°C (27°F)-16°C (3°F)0"
2013-4°C (25°F)-18°C (0°F)0.2"
201224°C (76°F)3°C (37°F)0"
201110°C (50°F)-1°C (30°F)0"
201014°C (58°F)4°C (40°F)0"
200913°C (56°F)0°C (32°F)0"
20081°C (34°F)-13°C (8°F)1.46"
20070°C (32°F)-8°C (17°F)0.08"
2006-5°C (23°F)-9°C (15°F)0.05"
20053°C (37°F)-11°C (12°F)0"
2004-3°C (27°F)-8°C (17°F)0"
20035°C (41°F)-3°C (27°F)0"
2002-1°C (30°F)-4°C (25°F)0.88"
20016°C (42°F)-4°C (24°F)--
2000-1°C (31°F)-10°C (14°F)0"
19996°C (43°F)-1°C (31°F)0"
19984°C (39°F)-7°C (19°F)0.22"
1997-2°C (29°F)-12°C (11°F)0"
19968°C (46°F)-6°C (21°F)0"
19958°C (46°F)1°C (33°F)0"
1994-1°C (31°F)-11°C (13°F)0"
1993-9°C (15°F)-21°C (-6°F)0"
1992-2°C (28°F)-18°C (-1°F)0"
19913°C (37°F)-2°C (28°F)0.17"
19905°C (41°F)1°C (33°F)0"
1989-2°C (29°F)-7°C (19°F)0.02"
19881°C (34°F)-7°C (19°F)0.07"
19877°C (45°F)-4°C (25°F)0"
19866°C (42°F)-4°C (25°F)0.24"
1985-3°C (26°F)-16°C (4°F)0"
1984---9°C (16°F)0.12"
19839°C (48°F)0°C (32°F)2.18"
19828°C (46°F)-8°C (17°F)0.04"
1981-6°C (21°F)-13°C (8°F)0.08"
19801°C (34°F)--0.02"
19797°C (44°F)-7°C (19°F)0"
19782°C (35°F)-10°C (14°F)0.08"
1977-1°C (30°F)-5°C (23°F)0"
1976-5°C (23°F)-22°C (-8°F)0.94"
19758°C (47°F)-7°C (20°F)0.23"
19740°C (32°F)-9°C (15°F)0.43"
19732°C (36°F)-1°C (31°F)0.13"
1972-4°C (24°F)-7°C (19°F)0"
19711°C (34°F)-12°C (10°F)0"

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