Newmarket Weather in March (1981–2025)

📍 44.05°N, 79.47°W •
📊

March at a Glance in Newmarket

(1981–2025)
Avg High
🔥
3.6°C
Avg Low
❄️
-5.2°C
Avg Temp
🌡️
-0.8°C
Avg Rain
🌧️
42 mm
Avg Humidity
💧
82%
Avg Wind
🌬️
4 m/s
Avg Solar
☀️
3.5
kWh/m²/day
vs Annual
📈
-8.4°C
temp difference
❄️Cold afternoons🥶Freezing mornings🌤️Fairly sunny🌦️Some rain💨Breezy💦Humid air

Newmarket March Weather Overview

March is one of the cooler months of the year in Newmarket, with average highs near 3.6°C and lows around -5.2°C (mean -0.8°C). It is one of the drier months, averaging 42 mm of rainfall and 82% relative humidity across the period.

Newmarket March Temperature History (1981–2025)

Range

March is one of the cooler months of the year in Newmarket. Across 45 years of records, the warmest March in Newmarket was 2012 — when the month averaged 4.9°C — while the coldest was 2014 at -6.3°C. Typical March days reach 3.6°C with nights near -5.2°C. The long-term trend is warming, about 0.3°C per decade.

1981–1985 vs 2021–2025

Avg Temp-2.0°C→0.8°C+2.8°C
Max Temp2.3°C→5.4°C+3.1°C
Min Temp-6.2°C→-3.8°C+2.4°C

Trend (per decade)

Avg Temp+0.3°C/decade ↗
Max Temp+0.2°C/decade ↗
Min Temp+0.3°C/decade ↗

Distribution of Avg Temp

-7.0°C–-4.0°C3 yr (7%)
-4.0°C–-1.0°C21 yr (47%)
-1.0°C–2.0°C17 yr (38%)
2.0°C–5.0°C4 yr (9%)

Newmarket March Rainfall History (1981–2025)

Range

March is one of the drier months in Newmarket, averaging 42 mm of rainfall. The wettest March on record was 2002 with 96 mm, while the driest was 1981 at 12 mm.

Newmarket March Humidity History (1981–2025)

Range

Relative humidity in Newmarket during March averages 82%. The most humid March was 1982 at 89%, and the least humid was 2021 at 74%.

Newmarket March Solar History (1981–2025)

Range

March receives about 3.5 kWh/m²/day of solar energy in Newmarket. The sunniest Marchs were 1999, 2006 and 2015 at 4.1 kWh/m²/day, and the cloudiest was 2004 at 2.8.

Newmarket March Wind History (1981–2025)

Range

Average wind speed in Newmarket during March is 4 m/s. The windiest March was 2017 at 4.7 m/s, while the calmest was 2003 at 3.4 m/s.

What March Feels Like in Newmarket

🌅
Freezing
Morning
🌞
Cold
Afternoon
🌆
Freezing
Evening
Rain chanceModerate
Outdoor comfort★★★☆☆

How March Ranks in Newmarket

🥶4th coolest month of the year
🌵2nd driest month of the year
☀️7th sunniest month of the year

Ranked against the other 11 months using 1981–2025 averages.

Explore Newmarket Weather by Month

Newmarket March Averages by Decade

Metric1980s1990s2000s2010s2020sChange
Avg Temp-1.3°C-0.9°C-1.0°C-1.0°C0.9°C+2.2°C
Avg High3.3°C3.5°C3.2°C3.2°C5.6°C+2.3°C
Avg Low-5.9°C-5.4°C-5.2°C-5.3°C-3.6°C+2.3°C
Avg Rain37 mm30 mm55 mm48 mm41 mm+4 mm

Extreme March Records in Newmarket

🔥Warmest March23.9°C2012
🧊Coldest March-28.2°C2003
🌧️Wettest March96 mm2002
🏜️Driest March12 mm1981
🌬️Windiest March4.7 m/s2017

Key Insights for March

✅

March temperatures in Newmarket have risen by about 2.8°C between 1981–1985 and 2021–2025.

✅

March has ranged from a record low of -28.2°C (2003) to a record high of 23.9°C (2012).

✅

Rainfall in March is one of the drier months, averaging 42 mm, with a wettest year of 96 mm.

Is March a Good Time to Visit Newmarket?

A quieter season to visit Newmarket

If your dates are flexible, the more temperate months of July and August tend to be the most comfortable for visiting Newmarket. That said, March — with days averaging 3.6°C and nights around -5.2°C (mean -0.8°C) and moderate rainfall (42 mm) — can still be rewarding for travellers who don't mind the cooler conditions, and often means fewer crowds.

See Newmarket's complete weather history All 12 months side by side, 1981–2025 records, annual trends and long-term averages in one place. View full history →

Newmarket Weather in March — In Depth

☀️ March climate overview

March is one of the cooler months of the year in Newmarket, with average highs near 3.6°C and lows around -5.2°C (mean -0.8°C). It is one of the drier months, averaging 42 mm of rainfall and 82% relative humidity across the period.

🌧️ Rain, humidity & wind in March

March averages 42 mm of rainfall in Newmarket, one of the drier months compared with the rest of the year. The wettest March on record saw 96 mm (2002), and the driest just 12 mm (1981). Humidity sits around 82% and average wind speed is 4 m/s, with solar radiation averaging 3.5 kWh/m²/day.

📈 How March has changed

Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average March temperatures have risen by about 2.8°C. Daytime highs moved from 2.3°C to 5.4°C and overnight lows from -6.2°C to -3.8°C over the same span.
March Weather in Newmarket, Year by Year
🔥 warmest❄️ coldest🌧️ wettest
YearAvg HighAvg TempAvg LowHottest DayColdest DayRainfallHumidityWindSolar
20256.0°C1.0°C-4.0°C17.9°C-17.0°C57 mm81%4.4 m/s3.2
20246.6°C2.2°C-2.2°C16.1°C-8.7°C38 mm80%4 m/s3.4
20233.7°C-0.2°C-4.0°C9.4°C-8.8°C45 mm80%4.2 m/s3.6
20223.8°C-0.4°C-4.6°C15.4°C-13.1°C44 mm83%4.1 m/s3.2
20217.0°C1.4°C-4.2°C16.9°C-13.2°C32 mm74%4.3 m/s4
20206.2°C1.7°C-2.8°C18.0°C-11.7°C33 mm83%3.8 m/s3.2
20191.8°C-2.2°C-6.1°C10.1°C-15.7°C44 mm82%4 m/s3.4
20182.1°C-1.5°C-5.2°C8.6°C-10.4°C38 mm80%4.2 m/s3.6
20172.1°C-1.9°C-5.8°C15.1°C-13.6°C63 mm80%4.7 m/s3
20164.8°C0.9°C-3.0°C16.6°C-12.8°C80 mm85%3.5 m/s3.2
20150.6°C-4.1°C-8.8°C7.4°C-22.9°C28 mm81%3.9 m/s4.1
2014 ❄️-1.2°C-6.3°C-11.5°C11.2°C-23.9°C40 mm84%4 m/s3.8
20132.4°C-1.4°C-5.2°C11.8°C-11.9°C28 mm84%4 m/s3.4
2012 🔥9.8°C4.9°C0.0°C23.9°C-13.8°C31 mm81%3.9 m/s3.4
20112.3°C-1.7°C-5.7°C12.2°C-13.0°C77 mm83%4 m/s3.7
20107.7°C2.9°C-1.9°C15.2°C-7.5°C47 mm78%3.7 m/s4
20094.1°C-0.3°C-4.6°C14.1°C-17.0°C76 mm81%3.7 m/s3.8
20081.0°C-2.7°C-6.3°C9.7°C-13.3°C72 mm84%4.3 m/s3.8
20073.1°C-1.1°C-5.4°C19.4°C-22.1°C43 mm84%4.3 m/s3.5
20063.6°C-0.6°C-4.9°C19.1°C-13.0°C44 mm82%4.1 m/s4.1
20051.6°C-2.2°C-6.1°C13.8°C-14.2°C26 mm85%3.6 m/s3.9
20044.5°C0.8°C-2.8°C15.8°C-11.7°C65 mm86%3.9 m/s2.8
20032.1°C-3.2°C-8.4°C16.0°C-28.2°C60 mm88%3.4 m/s3.5
2002 🌧️2.5°C-1.7°C-5.9°C12.4°C-15.4°C96 mm84%4.4 m/s3.1
20011.8°C-1.8°C-5.4°C8.2°C-13.0°C42 mm85%3.7 m/s3.3
20007.4°C2.8°C-1.8°C20.0°C-6.5°C29 mm79%4 m/s3.2
19993.3°C-1.3°C-5.9°C17.3°C-18.4°C25 mm80%4.3 m/s4.1
19984.6°C0.8°C-2.9°C21.2°C-13.1°C44 mm83%4.3 m/s3.2
19971.8°C-2.4°C-6.6°C15.1°C-12.8°C49 mm84%4.3 m/s3.5
19961.5°C-3.0°C-7.5°C13.2°C-16.6°C23 mm76%4 m/s4
19956.3°C0.9°C-4.5°C19.7°C-15.5°C41 mm78%3.6 m/s3.3
19943.2°C-1.2°C-5.6°C15.3°C-12.3°C21 mm81%3.7 m/s3.6
19932.8°C-1.5°C-5.9°C17.5°C-16.6°C14 mm83%3.7 m/s3.3
19922.0°C-2.3°C-6.7°C11.0°C-14.9°C21 mm77%4.2 m/s3.9
19914.8°C0.2°C-4.4°C14.0°C-13.2°C44 mm81%4.3 m/s3.4
19905.1°C0.4°C-4.2°C20.4°C-15.3°C15 mm77%3.7 m/s3.3
19892.9°C-2.0°C-6.8°C20.0°C-20.6°C22 mm77%4 m/s3.3
19883.7°C-1.2°C-6.1°C14.5°C-16.5°C15 mm74%4.2 m/s3.6
19876.7°C1.5°C-3.6°C16.5°C-16.1°C17 mm77%3.5 m/s3.6
19864.8°C-0.2°C-5.2°C19.4°C-19.0°C19 mm83%4.3 m/s3.3
19853.1°C-1.6°C-6.4°C13.7°C-15.0°C69 mm83%4.6 m/s3.5
1984-0.9°C-5.1°C-9.3°C7.8°C-18.8°C52 mm86%4.3 m/s3.6
19834.0°C0.1°C-3.8°C10.6°C-14.6°C67 mm86%4.1 m/s—
19821.1°C-3.2°C-7.5°C15.2°C-20.5°C63 mm89%4.2 m/s—
19814.2°C0.0°C-4.2°C19.0°C-11.4°C12 mm78%4 m/s—

Actual recorded March data for each year, 1981–2025 — sourced from NASA POWER.

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Newmarket March Weather — FAQ

What is the average temperature in Newmarket in March?▼

The average high in March is around 3.6°C with lows near -5.2°C (mean -0.8°C), based on 45 years of NASA POWER data.

Does it rain a lot in Newmarket in March?▼

March averages 42 mm of rainfall in Newmarket, one of the drier months. The wettest on record was 96 mm in 2002.

What was the hottest March on record in Newmarket?▼

The hottest March reached 23.9°C in 2012. The coldest dipped to -28.2°C in 2003.

Has March in Newmarket gotten warmer over time?▼

Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average March temperatures have risen by about 2.8°C. Daytime highs moved from 2.3°C to 5.4°C and overnight lows from -6.2°C to -3.8°C over the same span.

Is March a good time to visit Newmarket?▼

March is one of the cooler months of the year in Newmarket and one of the drier months, so plan for around 3.6°C daytime highs and -5.2°C at night.

Is March the coldest month in Newmarket?▼

Not quite — March is the 4th coolest month in Newmarket, averaging -0.8°C.

What should I pack for Newmarket in March?▼

For March in Newmarket, pack warm layers and a jacket for chilly mornings, with typical highs of 3.6°C and lows of -5.2°C.

Is Newmarket humid in March?▼

Relative humidity in March averages 82% — quite humid.

How windy is Newmarket in March?▼

Average wind speed in March is 4 m/s. The windiest March on record averaged 4.7 m/s (2017).

Which March had the most rainfall in Newmarket?▼

The wettest March on record was 2002 with 96 mm. On average, March sees 42 mm.

Where does this March weather data come from?▼

All figures are derived from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite reanalysis, covering 1981–2025.

Other Ontario cities

Explore how the weather in Newmarket behaves each March, based on 45 years of NASA POWER climate data from 1981 to 2025. This page breaks down average temperatures, rainfall, humidity, wind and solar radiation for March specifically, along with year-by-year records and how the month has changed over the decades.