Peterborough Weather in January (1981–2025)

📍 44.30°N, 78.32°W •
📊

January at a Glance in Peterborough

(1981–2025)
Avg High
🔥
-4.5°C
Avg Low
❄️
-13.5°C
Avg Temp
🌡️
-9.0°C
Avg Rain
🌧️
42 mm
Avg Humidity
💧
91%
Avg Wind
🌬️
1.4 m/s
Avg Solar
☀️
1.4
kWh/m²/day
vs Annual
📈
-15.9°C
temp difference
❄️Freezing afternoons🥶Freezing mornings☁️Cloudier skies🌦️Some rain🍃Light winds💦Humid air

Peterborough January Weather Overview

January is one of the cooler months of the year in Peterborough, with average highs near -4.5°C and lows around -13.5°C (mean -9°C). It is one of the drier months, averaging 42 mm of rainfall and 91% relative humidity across the period.

Peterborough January Temperature History (1981–2025)

Range

January is one of the cooler months of the year in Peterborough. Across 45 years of records, the warmest January in Peterborough was 2017 — when the month averaged -4.4°C — while the coldest was 1994 at -16.8°C. Typical January days reach -4.5°C with nights near -13.5°C. The long-term trend is warming, about 0.8°C per decade.

1981–1985 vs 2021–2025

Avg Temp-12.7°C→-7.3°C+5.4°C
Max Temp-7.8°C→-3.2°C+4.6°C
Min Temp-17.6°C→-11.3°C+6.3°C

Trend (per decade)

Avg Temp+0.8°C/decade ↗
Max Temp+0.6°C/decade ↗
Min Temp+1°C/decade ↗

Distribution of Avg Temp

-17.0°C–-13.7°C4 yr (9%)
-13.7°C–-10.5°C9 yr (20%)
-10.5°C–-7.2°C16 yr (36%)
-7.2°C–-4.0°C16 yr (36%)

Peterborough January Rainfall History (1981–2025)

Range

January is one of the drier months in Peterborough, averaging 42 mm of rainfall. The wettest January on record was 1999 with 98 mm, while the driest was 1987 at 18 mm.

Peterborough January Humidity History (1981–2025)

Range

Relative humidity in Peterborough during January averages 91%. The most humid January was 1984 at 99%, and the least humid was 2025 at 81%.

Peterborough January Solar History (1981–2025)

Range

January receives about 1.4 kWh/m²/day of solar energy in Peterborough. The sunniest January was 2005 at 1.7 kWh/m²/day, and the cloudiest were 2018, 2020 and 2023, among others at 1.2.

Peterborough January Wind History (1981–2025)

Range

Average wind speed in Peterborough during January is 1.4 m/s. The windiest January was 1997 at 1.8 m/s, while the calmest were 2001 and 2011 at 1.1 m/s.

What January Feels Like in Peterborough

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

How January Ranks in Peterborough

🥶1st coolest month of the year
🌵2nd driest month of the year
☀️11th sunniest month of the year

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

Explore Peterborough Weather by Month

Peterborough January Averages by Decade

Metric1980s1990s2000s2010s2020sChange
Avg Temp-10.7°C-9.1°C-9.1°C-8.5°C-7.2°C+3.5°C
Avg High-5.8°C-4.5°C-4.6°C-4.2°C-3.0°C+2.8°C
Avg Low-15.6°C-13.7°C-13.6°C-12.9°C-11.3°C+4.3°C
Avg Rain31 mm50 mm50 mm38 mm35 mm+3 mm

Extreme January Records in Peterborough

🔥Warmest January11.5°C2008
🧊Coldest January-39.9°C1981
🌧️Wettest January98 mm1999
🏜️Driest January18 mm1987
🌬️Windiest January1.8 m/s1997

Key Insights for January

✅

January temperatures in Peterborough have risen by about 5.4°C between 1981–1985 and 2021–2025.

✅

January has ranged from a record low of -39.9°C (1981) to a record high of 11.5°C (2008).

✅

Rainfall in January is one of the drier months, averaging 42 mm, with a wettest year of 98 mm.

✅

Daytime highs and overnight lows have shifted differently — highs rose about 0.6°C per decade while lows rose 1°C per decade, narrowing the gap between day and night.

Is January a Good Time to Visit Peterborough?

A quieter season to visit Peterborough

If your dates are flexible, the more temperate months of July and August tend to be the most comfortable for visiting Peterborough. That said, January — with days averaging -4.5°C and nights around -13.5°C (mean -9°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 Peterborough'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 →

Peterborough Weather in January — In Depth

☀️ January climate overview

January is one of the cooler months of the year in Peterborough, with average highs near -4.5°C and lows around -13.5°C (mean -9°C). It is one of the drier months, averaging 42 mm of rainfall and 91% relative humidity across the period.

🌧️ Rain, humidity & wind in January

January averages 42 mm of rainfall in Peterborough, one of the drier months compared with the rest of the year. The wettest January on record saw 98 mm (1999), and the driest just 18 mm (1987). Humidity sits around 91% and average wind speed is 1.4 m/s, with solar radiation averaging 1.4 kWh/m²/day.

📈 How January has changed

Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average January temperatures have risen by about 5.4°C. Daytime highs moved from -7.8°C to -3.2°C and overnight lows from -17.6°C to -11.3°C over the same span.
January Weather in Peterborough, Year by Year
🔥 warmest❄️ coldest🌧️ wettest
YearAvg HighAvg TempAvg LowHottest DayColdest DayRainfallHumidityWindSolar
2025-4.2°C-8.1°C-11.9°C1.4°C-19.8°C19 mm81%1.6 m/s1.6
2024-2.1°C-5.5°C-8.9°C2.3°C-17.0°C44 mm87%1.4 m/s1.3
2023-1.2°C-4.8°C-8.5°C4.3°C-17.7°C40 mm90%1.2 m/s1.2
2022-6.1°C-11.4°C-16.6°C2.4°C-26.6°C27 mm84%1.4 m/s1.6
2021-2.3°C-6.5°C-10.6°C2.8°C-21.1°C20 mm87%1.2 m/s1.5
2020-2.1°C-6.7°C-11.2°C8.2°C-23.4°C57 mm92%1.2 m/s1.2
2019-6.1°C-11.0°C-16.0°C3.6°C-28.2°C43 mm88%1.5 m/s1.5
2018-4.3°C-8.8°C-13.2°C8.5°C-26.9°C43 mm88%1.5 m/s1.2
2017 🔥-1.1°C-4.4°C-7.8°C5.2°C-18.5°C47 mm88%1.4 m/s1.4
2016-3.1°C-7.2°C-11.3°C5.5°C-21.0°C43 mm90%1.4 m/s1.3
2015-5.5°C-10.7°C-16.0°C2.5°C-24.6°C25 mm83%1.5 m/s1.6
2014-6.9°C-11.4°C-15.8°C3.2°C-31.7°C31 mm89%1.6 m/s1.2
2013-1.5°C-5.8°C-10.2°C10.6°C-24.2°C32 mm83%1.4 m/s1.3
2012-1.8°C-6.1°C-10.3°C4.9°C-22.8°C48 mm88%1.4 m/s1.3
2011-5.9°C-10.0°C-14.1°C4.8°C-27.4°C25 mm88%1.1 m/s1.6
2010-5.6°C-9.8°C-13.9°C2.6°C-25.5°C44 mm96%1.3 m/s1.5
2009-7.2°C-11.7°C-16.2°C-0.1°C-27.0°C51 mm94%1.2 m/s1.5
2008-1.6°C-5.4°C-9.2°C11.5°C-28.4°C68 mm92%1.5 m/s1.3
2007-3.0°C-6.7°C-10.4°C8.3°C-23.0°C50 mm90%1.4 m/s1.4
2006-0.8°C-5.0°C-9.2°C5.0°C-21.9°C76 mm95%1.3 m/s1.3
2005-5.9°C-10.4°C-14.8°C8.0°C-26.8°C52 mm89%1.3 m/s1.7
2004-10.2°C-14.8°C-19.4°C5.6°C-33.6°C55 mm93%1.5 m/s1.6
2003-8.0°C-13.6°C-19.3°C-0.8°C-35.5°C39 mm95%1.4 m/s1.4
2002-1.2°C-5.0°C-8.9°C4.8°C-19.0°C39 mm93%1.4 m/s1.3
2001-4.1°C-9.4°C-14.6°C0.0°C-28.1°C38 mm98%1.1 m/s1.3
2000-4.3°C-9.1°C-13.9°C8.4°C-26.7°C31 mm85%1.6 m/s1.3
1999 🌧️-5.7°C-10.3°C-15.0°C2.1°C-30.0°C98 mm97%1.5 m/s1.4
1998-2.9°C-7.0°C-11.2°C4.9°C-23.2°C77 mm95%1.3 m/s1.5
1997-4.3°C-8.9°C-13.4°C6.0°C-27.4°C35 mm86%1.8 m/s1.3
1996-5.7°C-10.6°C-15.6°C7.8°C-26.3°C42 mm90%1.6 m/s1.3
1995-1.6°C-5.0°C-8.5°C9.8°C-20.7°C51 mm90%1.4 m/s1.3
1994 ❄️-11.0°C-16.8°C-22.5°C0.6°C-36.5°C32 mm94%1.5 m/s1.3
1993-3.1°C-7.5°C-11.8°C5.8°C-21.7°C61 mm91%1.5 m/s1.3
1992-4.4°C-9.5°C-14.6°C2.1°C-33.1°C37 mm94%1.3 m/s1.4
1991-5.5°C-10.5°C-15.5°C0.8°C-31.0°C30 mm94%1.5 m/s1.4
1990-0.8°C-5.1°C-9.4°C4.5°C-22.3°C43 mm93%1.6 m/s1.2
1989-1.9°C-6.8°C-11.6°C4.4°C-29.8°C34 mm89%1.7 m/s1.3
1988-3.2°C-7.8°C-12.4°C7.4°C-26.0°C24 mm86%1.6 m/s1.3
1987-3.8°C-8.1°C-12.4°C2.0°C-24.9°C18 mm93%1.3 m/s1.2
1986-4.8°C-10.2°C-15.6°C4.6°C-31.1°C26 mm93%1.5 m/s1.2
1985-7.4°C-11.5°C-15.7°C-0.4°C-28.5°C43 mm94%1.3 m/s1.3
1984-8.5°C-13.4°C-18.3°C0.1°C-33.5°C23 mm99%1.2 m/s1.4
1983-3.6°C-8.0°C-12.4°C2.1°C-25.9°C37 mm91%1.3 m/s—
1982-9.8°C-15.5°C-21.1°C2.4°C-34.4°C57 mm95%1.7 m/s—
1981-9.6°C-15.1°C-20.5°C1.6°C-39.9°C19 mm98%1.2 m/s—

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

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Peterborough January Weather — FAQ

What is the average temperature in Peterborough in January?▼

The average high in January is around -4.5°C with lows near -13.5°C (mean -9°C), based on 45 years of NASA POWER data.

Does it rain a lot in Peterborough in January?▼

January averages 42 mm of rainfall in Peterborough, one of the drier months. The wettest on record was 98 mm in 1999.

What was the hottest January on record in Peterborough?▼

The hottest January reached 11.5°C in 2008. The coldest dipped to -39.9°C in 1981.

Has January in Peterborough gotten warmer over time?▼

Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average January temperatures have risen by about 5.4°C. Daytime highs moved from -7.8°C to -3.2°C and overnight lows from -17.6°C to -11.3°C over the same span.

Is January a good time to visit Peterborough?▼

January is one of the cooler months of the year in Peterborough and one of the drier months, so plan for around -4.5°C daytime highs and -13.5°C at night.

Is January the coldest month in Peterborough?▼

Yes — January is the coldest month of the year in Peterborough, averaging -9°C.

What should I pack for Peterborough in January?▼

For January in Peterborough, pack warm layers and a jacket for chilly mornings, with typical highs of -4.5°C and lows of -13.5°C.

Is Peterborough humid in January?▼

Relative humidity in January averages 91% — quite humid.

How windy is Peterborough in January?▼

Average wind speed in January is 1.4 m/s. The windiest January on record averaged 1.8 m/s (1997).

Which January had the most rainfall in Peterborough?▼

The wettest January on record was 1999 with 98 mm. On average, January sees 42 mm.

Where does this January 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 Peterborough behaves each January, 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 January specifically, along with year-by-year records and how the month has changed over the decades.