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London weather

Ontario · 422,324 inhabitants · Thursday, October 29 · updated 16:34

Raining now Air: Fair

20°

Rain showers

Feels like 22°C

Wind

23 km/h

Gusts

40 km/h

Humidity

54 %

Pressure

1015 hPa

Clouds

68 %

Storm

Rise 07:55 Set 18:21 Day 10 h 25 min UV 3 · Moderate

Morning, afternoon, evening

Trend

Afternoon

Rain showers

21°20°

Feels like 24°

Wind ↑ SW 23 km/h

Gusts 41 km/h

Humidity 59 %

💧 0.5 mm

Evening

Drizzle

17°14°

Feels like 17°

Wind ↑ W 21 km/h

Gusts 41 km/h

Humidity 81 %

💧 0.9 mm

17:00

20°

0.5mm

WSW 23

London forecast in charts · next 7 days

The week ahead: highs and lows

▲ This week runs +8.1° warmer than usual

Highs Lows Usual for the season (1991–2020 average)

Hourly detail

Temperature (°C) Rain (mm) Wind (km/h)

London climate: what a normal year looks like

The hottest stretch is July, when afternoons average 26 °C; the coldest is January, when nights average −8 °C. Between those two months the average temperature changes by 27 °C.

Nights typically freeze from December to March, the coldest averaging −8 °C in February.

From 15 h 21 min of daylight in late June to 9 h 00 min in late December.

There is no real dry season: monthly rainfall stays between 65 mm and 106 mm on average.

Forecast highs for the coming week average 18 °C, 4 °C warmer than a normal October (14 °C).

30-year averages (1991–2020)
Month	Typical high	Typical low	Rainfall
Jan	−2 °C	−8 °C	81 mm
Feb	0 °C	−8 °C	65 mm
Mar	5 °C	−4 °C	75 mm
Apr	12 °C	2 °C	97 mm
May	19 °C	9 °C	101 mm
Jun	24 °C	14 °C	106 mm
Jul	26 °C	17 °C	104 mm
Aug	25 °C	16 °C	89 mm
Sep	22 °C	12 °C	89 mm
Oct	14 °C	6 °C	90 mm
Nov	8 °C	1 °C	83 mm
Dec	2 °C	−4 °C	78 mm
Whole year	13 °C	4 °C	1,060 mm

Source: our own processing of the ERA5 reanalysis (Copernicus/ECMWF) for 42.98° N, 81.23° W, 1991–2020. ERA5 averages over a 0.25° grid (about 25 km): hills, a coastline or the heat of the city itself can shift local values by a degree or two.

Air you breathe in London: pollution and pollen

2/6

Fair

European Air Quality Index (EAQI), from Copernicus CAMS

PM2.515µg/m³

PM1015µg/m³

Copernicus CAMS model, updated several times a day.

Rain radar around London

Rain observed over the last two hours by official weather radars around London, followed by the radar forecast for the next hour where the weather service provides one.

Full-screen rain radar and next-hour rain on RainAtlas

Rain radar Last two hours, then forecast where available · drag the timeline

Moon over London

Waning gibbous

87 % illuminated · 18.3 days

Rise 16:32 Set 08:20

Fri 30/10 79%

Sat 31/10 69%

Sun 1/11 59%

Mon 2/11 49% Last quarter

Tue 3/11 38%

Wed 4/11 28%

Thu 5/11 19%

Fri 6/11 12%

Sat 7/11 6%

Sun 8/11 2%

Mon 9/11 0%

Tue 10/11 1% New moon

Moonrise and moonset in local time (America/Toronto); phase and lit fraction from a synodic calculation.

Look up a past day in London

Curious about the weather in London on a given day? Choose a date: we read it from the ERA5 reanalysis (ECMWF / Copernicus C3S), which runs until about a week ago.

London weather at a glance

This page gathers everything about the weather in London, Ontario: conditions now, the forecast for each part of the day and the trend for the coming week. At the moment the sky is “rain showers”, it is 20 °C (feels like 22 °C) and the wind blows at 23 km/h.

Expected range today: 12 °C to 21 °C and a dry sky. The forecast comes from the AtmoAtlas engine, which combines ECMWF-AIFS, NOAA GFS and DWD ICON, adjusts cloud cover with METAR reports and uses convective energy (CAPE) to flag storms.

Other big cities nearby

Hamilton 116 km 19°

Brampton 142 km 22°

Mississauga 144 km 20°

London weather data for developers

Use the London forecast in your own website or app: one JSON call returns weather, air quality, tides and sun and moon times. The free key needs no card.

Create a free key

Where does this forecast come from? Our engine, checked every day against 1125 weather stations