Weather in Harrow
Ontario, 194 m · continuously updated
Harrow Cda Auto (2 km) · 15 °C · ECCC 08:00
- Wind
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- Humidity
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- Rain ahead
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- Sunset
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Temperature · last 4 and next 28 hours
Harrow weather: the next 24 hours
Updated hourly.
Harrow 14-day forecast
Two-week trend.
Sun and golden hours
Sunrise –, golden light until –
Sunset –, golden light from –
–
Air quality
European index, modelled by Copernicus (CAMS).
UV index
Daily maximum — protection advised from 3.
Freezing level
Snow settles about 300 m below it.
Around Harrow
Neighbouring towns, as the crow flies.
Official weather warnings
No active warning for Harrow.
Updated 02 Nov 13:13.
Data Source: Environment and Climate Change Canada, under the Data Services End-use Licence. Warnings are shown unaltered; this site is not endorsed by Environment and Climate Change Canada.
Is there an active weather warning for Harrow?
No active warning for Harrow.
Latest measurement near Harrow
Measured at Harrow Cda Auto, 2 km away from Harrow, November 2, 08:00 EST. This Environment and Climate Change Canada weather station is at an elevation of 193 m (Ontario). These are measured values, not a forecast.
| Temperature | 14.6 °C |
|---|---|
| Wind | 11 km/h SW |
| Gusts, last hour | — |
| Precipitation, last hour | 0.0 mm |
| Humidity | 76 % |
| Pressure (sea level) | 1025 hPa |
Past 24 hours: low 10.0 °C, high 18.8 °C, 0.0 mm of precipitation.
Harrow lies at about 194 m; the station is at 193 m.
Latest measurements from the Canadian weather stations
Data Source: Environment and Climate Change Canada. Reports are published as measured, without quality control, and may contain errors or gaps. Not an official product of the Government of Canada and not endorsed by it. Data Services End-use Licence
The observed climate near Harrow
The weather station nearest to Harrow, Harrow located 191 m above sea level, is 1 km away; its records cover 1918–2020. In November, the mean temperature there is 5.0 °C over 1991–2020, 0.2 °C more than over 1961–1990 (4.8 °C), with about – mm of rain. The warmest month ever measured is July 1999 (25.1 °C), the coldest January 1918 (−11.1 °C). See the full series of Harrow
Today in Harrow
- No washing outside today: the air is too cold or too damp to dry anything before evening (maximum drying power of 12.7 hPa per hour). How it is calculated
- Airing the house around 8:00 is still the least bad option: a dew point of 10.1 °C means 53 % humidity once the air is warmed to 20 °C, barely better than the 50 % of a typical home. Five to ten minutes of through-draught is enough. How it is calculated
- Terrace and barbecue between 18:00 and 23:00: dry, wind at 16 km/h, 14 °C at 8 pm. A lovely evening. How it is calculated
Calculated from Open-Meteo forecasts of 2026-11-02 08:13 (local time): model values, not measurements. All of today's advice
7-day forecast for Harrow
Today (Monday 2 Nov) in Harrow: overcast, 11 to 16 °C, precipitation 0.0 mm (17 %), wind up to 22 km/h. Tomorrow: overcast, 14 to 21 °C.
| Day | Weather | Min | Max | Precip. | Wind |
|---|---|---|---|---|---|
| Today | overcast | 11 °C | 16 °C | 0.0 mm | 22 km/h |
| Tomorrow | overcast | 14 °C | 21 °C | 0.0 mm | 22 km/h |
| Wed 4 Nov | drizzle | 15 °C | 17 °C | 4.3 mm | 34 km/h |
| Thu 5 Nov | drizzle | 11 °C | 15 °C | 3.0 mm | 32 km/h |
| Fri 6 Nov | drizzle | 8 °C | 11 °C | 5.7 mm | 33 km/h |
| Sat 7 Nov | light drizzle | 6 °C | 9 °C | 0.8 mm | 29 km/h |
| Sun 8 Nov | heavy drizzle | 7 °C | 10 °C | 4.2 mm | 27 km/h |
Tomorrow's weather in Harrow
Tomorrow, Tuesday 3 Nov, in Harrow: overcast, from 14 to 21 °C, 0.0 mm of precipitation (probability 9 %), wind up to 22 km/h.
| Hour | Weather | Temp. | Precip. | Chance | Wind |
|---|---|---|---|---|---|
| 00:00 |  overcast | 14 °C | 0.0 mm | 6 % | 19 km/h |
| 03:00 | overcast | 14 °C | 0.0 mm | 4 % | 17 km/h |
| 06:00 | overcast | 14 °C | 0.0 mm | 3 % | 16 km/h |
| 09:00 | overcast | 16 °C | 0.0 mm | 3 % | 18 km/h |
| 12:00 |  mostly sunny | 19 °C | 0.0 mm | 3 % | 19 km/h |
| 15:00 | sunny | 21 °C | 0.0 mm | 4 % | 19 km/h |
| 18:00 | overcast | 17 °C | 0.0 mm | 6 % | 15 km/h |
| 21:00 | overcast | 16 °C | 0.0 mm | 0 % | 15 km/h |
Frequently asked questions
Will it rain tomorrow in Harrow?
No significant rain expected (0.0 mm forecast).
How warm will it be tomorrow in Harrow?
Between 14 and 21 °C.
The weekend
This weekend in Harrow: Saturday light drizzle, 6 to 9 °C, Sunday heavy drizzle, 7 to 10 °C.
| Day | Weather | Min | Max | Precip. | Wind |
|---|---|---|---|---|---|
| Sat 7 Nov |  light drizzle | 6 °C | 9 °C | 0.8 mm | 29 km/h |
| Sun 8 Nov | heavy drizzle | 7 °C | 10 °C | 4.2 mm | 27 km/h |
Hour by hour
The next 48 hours in Harrow, hour by hour: temperature from 13 to 21 °C, 0.1 mm of rain expected.
| Hour | Weather | Temp. | Precip. | Chance | Wind |
|---|---|---|---|---|---|
| 08:00 |  partly cloudy | 13 °C | 0.0 mm | 1 % | 13 km/h |
| 09:00 | overcast | 14 °C | 0.0 mm | 1 % | 22 km/h |
| 10:00 | overcast | 14 °C | 0.0 mm | 1 % | 18 km/h |
| 11:00 | overcast | 15 °C | 0.0 mm | 2 % | 16 km/h |
| 12:00 | overcast | 14 °C | 0.0 mm | 3 % | 15 km/h |
| 13:00 | overcast | 16 °C | 0.0 mm | 1 % | 19 km/h |
| 14:00 | overcast | 15 °C | 0.0 mm | 3 % | 14 km/h |
| 15:00 | overcast | 15 °C | 0.0 mm | 2 % | 17 km/h |
| 16:00 | overcast | 15 °C | 0.0 mm | 2 % | 16 km/h |
| 17:00 | overcast | 14 °C | 0.0 mm | 5 % | 13 km/h |
| 18:00 | overcast | 14 °C | 0.0 mm | 5 % | 12 km/h |
| 19:00 | overcast | 14 °C | 0.0 mm | 6 % | 16 km/h |
| 20:00 | overcast | 14 °C | 0.0 mm | 3 % | 18 km/h |
| 21:00 | overcast | 14 °C | 0.0 mm | 7 % | 16 km/h |
| 22:00 | overcast | 14 °C | 0.0 mm | 5 % | 17 km/h |
| 23:00 | overcast | 14 °C | 0.0 mm | 6 % | 17 km/h |
| 00:00 | overcast | 14 °C | 0.0 mm | 6 % | 19 km/h |
| 01:00 | overcast | 14 °C | 0.0 mm | 7 % | 15 km/h |
| 02:00 | overcast | 14 °C | 0.0 mm | 9 % | 16 km/h |
| 03:00 | overcast | 14 °C | 0.0 mm | 4 % | 17 km/h |
| 04:00 | overcast | 14 °C | 0.0 mm | 4 % | 17 km/h |
| 05:00 | overcast | 14 °C | 0.0 mm | 4 % | 15 km/h |
| 06:00 | overcast | 14 °C | 0.0 mm | 3 % | 16 km/h |
| 07:00 | mostly sunny | 14 °C | 0.0 mm | 3 % | 14 km/h |
| 08:00 | overcast | 14 °C | 0.0 mm | 3 % | 15 km/h |
| 09:00 | overcast | 16 °C | 0.0 mm | 3 % | 18 km/h |
| 10:00 | overcast | 16 °C | 0.0 mm | 3 % | 21 km/h |
| 11:00 | overcast | 17 °C | 0.0 mm | 3 % | 20 km/h |
| 12:00 | mostly sunny | 19 °C | 0.0 mm | 3 % | 19 km/h |
| 13:00 | mostly sunny | 20 °C | 0.0 mm | 3 % | 17 km/h |
| 14:00 | mostly sunny | 20 °C | 0.0 mm | 4 % | 17 km/h |
| 15:00 | sunny | 21 °C | 0.0 mm | 4 % | 19 km/h |
| 16:00 | mostly sunny | 20 °C | 0.0 mm | 5 % | 18 km/h |
| 17:00 | sunny | 18 °C | 0.0 mm | 5 % | 16 km/h |
| 18:00 | overcast | 17 °C | 0.0 mm | 6 % | 15 km/h |
| 19:00 | overcast | 16 °C | 0.0 mm | 6 % | 14 km/h |
| 20:00 | overcast | 16 °C | 0.0 mm | 0 % | 15 km/h |
| 21:00 | overcast | 16 °C | 0.0 mm | 0 % | 15 km/h |
| 22:00 | overcast | 16 °C | 0.0 mm | 0 % | 18 km/h |
| 23:00 | overcast | 16 °C | 0.0 mm | 0 % | 22 km/h |
| 00:00 | overcast | 16 °C | 0.0 mm | 0 % | 24 km/h |
| 01:00 | overcast | 16 °C | 0.0 mm | 0 % | 27 km/h |
| 02:00 | sunny | 16 °C | 0.0 mm | 3 % | 29 km/h |
| 03:00 | overcast | 16 °C | 0.0 mm | 3 % | 26 km/h |
| 04:00 | overcast | 17 °C | 0.0 mm | 3 % | 27 km/h |
| 05:00 | partly cloudy | 16 °C | 0.0 mm | 3 % | 28 km/h |
| 06:00 | mostly sunny | 16 °C | 0.0 mm | 3 % | 28 km/h |
| 07:00 | light drizzle | 16 °C | 0.1 mm | 3 % | 29 km/h |
Location of Harrow
Harrow lies at 194 m, 13 m below the average of the 265 places we cover in Ontario (207 m). That makes it the 122nd lowest of the 265. The main town, Toronto, lies 342 km to the north-east. The nearest places we cover are Colchester (6 km to the south), Kingsville (17 km to the north-east), Amherstburg (17 km to the north-west) and Essex (17 km to the north-east). With about 2,562 inhabitants according to GeoNames, Harrow is the 251st largest of the 265 places we cover in Ontario. Of the places of interest on this site, the nearest is Point Pelee National Park (national park, 34 km to the east).
Today is 8.2 °C above the November normal (7.7 °C).
Climate of Harrow: 1991–2020 normals
In Harrow, July is typically the warmest month (up to 26.5 °C on average), while January is the coldest at -6.2 °C. April sees the most rain, with around 90 mm.
By season (average highs, 1991–2020 normals): winter 0.4 °C and 183 mm of rain, spring 10.9 °C and 245 mm, summer 25.4 °C and 245 mm, autumn 14.6 °C and 211 mm. The wettest season is summer (28 % of the annual total), the driest winter (21 %).
| Max T (°C) | Min T (°C) | Rainfall (mm) | Rainy days | |
|---|---|---|---|---|
| January | -0.9 | -6.2 | 64 | 10 |
| February | 0.0 | -5.9 | 55 | 9 |
| March | 3.5 | -2.0 | 66 | 10 |
| April | 10.7 | 5.4 | 90 | 11 |
| May | 18.5 | 13.1 | 89 | 13 |
| June | 24.2 | 18.9 | 88 | 11 |
| July | 26.5 | 21.3 | 79 | 10 |
| August | 25.4 | 20.7 | 78 | 10 |
| September | 21.6 | 17.0 | 71 | 8 |
| October | 14.6 | 10.3 | 70 | 10 |
| November | 7.7 | 3.8 | 70 | 9 |
| December | 2.0 | -1.9 | 64 | 10 |
Compared with Toronto, the main town 342 km to the north-east, highs in the warmest month are 0.1 °C higher here, and the year brings 74 mm more precipitation. In 4 months the average low falls below 0 °C (January, February, March and December); in 4 months the average high exceeds 20 °C (June, July, August and September).
Nearby places with normals of their own (from another station or reanalysis grid cell) compare as follows: Kingsville (17 km to the north-east): almost identical normals; Essex (17 km to the north-east): summers 0.3 °C warmer and 5 mm wetter a year; Leamington (26 km to the east): summers 0.4 °C cooler and 27 mm wetter a year. Among the 265 places we cover in Ontario whose normals come from the ERA5 reanalysis, Harrow ranks 18th for summer warmth and 203rd for annual precipitation. The warmest summers are in LaSalle and Tecumseh and the coolest in Shuniah Township; the wettest year is in Crystal Beach and the driest in Kashechewan.
What is the warmest month in Harrow?
The warmest month in Harrow is typically July, averaging 26.5 °C (1991–2020 normal). The coldest is January, at -6.2 °C.
How many rainy days does Harrow get per year?
Harrow sees about 121 rainy days a year, adding up to roughly 883 mm of rainfall (1991–2020 normals).
How big is the gap between summer and winter in Harrow?
Between July and January, the temperature gap in Harrow runs to about 32.7 °C, based on the 1991–2020 normals.