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Weather in Williamsville
Ontario, 94 m · continuously updated
Kingston Climate (8 km) · 12 °C · ECCC 08:00
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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
Williamsville weather: the next 24 hours
Updated hourly.
Williamsville 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 Williamsville
Neighbouring towns, as the crow flies.
Official weather warnings
No active warning for Williamsville.
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 Williamsville?
No active warning for Williamsville.
Latest measurement near Williamsville
Measured at Kingston Climate, 8 km away from Williamsville, November 2, 08:00 EST. This Environment and Climate Change Canada weather station is at an elevation of 113 m (Ontario). These are measured values, not a forecast.
| Temperature | 12.4 °C |
|---|---|
| Wind | 16 km/h S |
| Gusts, last hour | — |
| Precipitation, last hour | 0.0 mm |
| Humidity | 83 % |
| Pressure (sea level) | 1029 hPa |
Past 24 hours: low 2.4 °C, high 13.3 °C, 0.0 mm of precipitation.
Williamsville lies at about 94 m; the station is at 113 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 Williamsville
The weather station nearest to Williamsville, Kingston located 93 m above sea level, is 8 km away; its records cover 1873–2020. In November, the mean temperature there is 3.3 °C over 1991–2020, practically as over 1961–1990 (3.3 °C), with about – mm of rain. The warmest month ever measured is July 1921 (24.9 °C), the coldest February 1934 (−15.5 °C). See the full series of Kingston
Today in Williamsville
- No washing outside today: the air is too cold or too damp to dry anything before evening (maximum drying power of 9.4 hPa per hour). How it is calculated
- Best time to air the house: tomorrow, around 7:00. The outdoor dew point drops to 8 °C; once warmed to 20 °C, that air holds only 46 % humidity, against 50 % in a typical home: opening the windows dries the house. How it is calculated
- UV index of 3 around 12:00: stay in the shade around 12:00. Fair skin burns in about 67 minutes without protection; wear sunscreen and a hat if you are outdoors. How it is calculated
- Terrace and barbecue between 18:00 and 23:00: dry but cool, 11 °C at 8 pm and wind at 8 km/h. Wrap up warm, or move indoors. 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 Williamsville
Today (Monday 2 Nov) in Williamsville: overcast, 6 to 13 °C, precipitation 0.0 mm (4 %), wind up to 15 km/h. Tomorrow: light rain, 11 to 14 °C.
| Day | Weather | Min | Max | Precip. | Wind |
|---|---|---|---|---|---|
| Today | overcast | 6 °C | 13 °C | 0.0 mm | 15 km/h |
| Tomorrow | light rain | 11 °C | 14 °C | 1.8 mm | 15 km/h |
| Wed 4 Nov | overcast | 13 °C | 18 °C | 0.0 mm | 26 km/h |
| Thu 5 Nov | heavy drizzle | 13 °C | 16 °C | 5.1 mm | 24 km/h |
| Fri 6 Nov | drizzle | 11 °C | 13 °C | 1.2 mm | 16 km/h |
| Sat 7 Nov | light drizzle | 8 °C | 11 °C | 1.2 mm | 17 km/h |
| Sun 8 Nov | overcast | 6 °C | 9 °C | 0.0 mm | 25 km/h |
Tomorrow's weather in Williamsville
Tomorrow, Tuesday 3 Nov, in Williamsville: light rain, from 11 to 14 °C, 1.8 mm of precipitation (probability 44 %), wind up to 15 km/h.
| Hour | Weather | Temp. | Precip. | Chance | Wind |
|---|---|---|---|---|---|
| 00:00 |  overcast | 11 °C | 0.0 mm | 5 % | 6 km/h |
| 03:00 | overcast | 11 °C | 0.0 mm | 13 % | 6 km/h |
| 06:00 | overcast | 11 °C | 0.0 mm | 18 % | 7 km/h |
| 09:00 | overcast | 11 °C | 0.0 mm | 35 % | 9 km/h |
| 12:00 | overcast | 13 °C | 0.0 mm | 30 % | 10 km/h |
| 15:00 | overcast | 12 °C | 0.0 mm | 9 % | 12 km/h |
| 18:00 | overcast | 12 °C | 0.0 mm | 5 % | 5 km/h |
| 21:00 | overcast | 12 °C | 0.0 mm | 1 % | 7 km/h |
Frequently asked questions
Will it rain tomorrow in Williamsville?
Yes: 1.8 mm expected, probability 44 %.
How warm will it be tomorrow in Williamsville?
Between 11 and 14 °C.
The weekend
This weekend in Williamsville: Saturday light drizzle, 8 to 11 °C, Sunday overcast, 6 to 9 °C.
| Day | Weather | Min | Max | Precip. | Wind |
|---|---|---|---|---|---|
| Sat 7 Nov |  light drizzle | 8 °C | 11 °C | 1.2 mm | 17 km/h |
| Sun 8 Nov | overcast | 6 °C | 9 °C | 0.0 mm | 25 km/h |
Hour by hour
The next 48 hours in Williamsville, hour by hour: temperature from 10 to 14 °C, 1.8 mm of rain expected.
| Hour | Weather | Temp. | Precip. | Chance | Wind |
|---|---|---|---|---|---|
| 08:00 |  mostly sunny | 10 °C | 0.0 mm | 1 % | 8 km/h |
| 09:00 | sunny | 12 °C | 0.0 mm | 1 % | 12 km/h |
| 10:00 | sunny | 13 °C | 0.0 mm | 1 % | 14 km/h |
| 11:00 | sunny | 13 °C | 0.0 mm | 1 % | 15 km/h |
| 12:00 | sunny | 13 °C | 0.0 mm | 2 % | 15 km/h |
| 13:00 | overcast | 13 °C | 0.0 mm | 2 % | 14 km/h |
| 14:00 | overcast | 13 °C | 0.0 mm | 2 % | 12 km/h |
| 15:00 | overcast | 13 °C | 0.0 mm | 2 % | 10 km/h |
| 16:00 | overcast | 12 °C | 0.0 mm | 2 % | 8 km/h |
| 17:00 | overcast | 11 °C | 0.0 mm | 2 % | 8 km/h |
| 18:00 | overcast | 11 °C | 0.0 mm | 2 % | 8 km/h |
| 19:00 | overcast | 11 °C | 0.0 mm | 3 % | 9 km/h |
| 20:00 | overcast | 11 °C | 0.0 mm | 2 % | 7 km/h |
| 21:00 | overcast | 11 °C | 0.0 mm | 3 % | 7 km/h |
| 22:00 | overcast | 11 °C | 0.0 mm | 3 % | 7 km/h |
| 23:00 | overcast | 11 °C | 0.0 mm | 4 % | 7 km/h |
| 00:00 | overcast | 11 °C | 0.0 mm | 5 % | 6 km/h |
| 01:00 | overcast | 11 °C | 0.0 mm | 8 % | 5 km/h |
| 02:00 | light drizzle | 11 °C | 0.4 mm | 10 % | 3 km/h |
| 03:00 | overcast | 11 °C | 0.0 mm | 13 % | 6 km/h |
| 04:00 | overcast | 11 °C | 0.0 mm | 14 % | 6 km/h |
| 05:00 | overcast | 11 °C | 0.0 mm | 16 % | 1 km/h |
| 06:00 | overcast | 11 °C | 0.0 mm | 18 % | 7 km/h |
| 07:00 | overcast | 11 °C | 0.0 mm | 24 % | 6 km/h |
| 08:00 | overcast | 11 °C | 0.0 mm | 37 % | 6 km/h |
| 09:00 | overcast | 11 °C | 0.0 mm | 35 % | 9 km/h |
| 10:00 |  light rain | 12 °C | 1.4 mm | 44 % | 14 km/h |
| 11:00 | overcast | 13 °C | 0.0 mm | 36 % | 13 km/h |
| 12:00 | overcast | 13 °C | 0.0 mm | 30 % | 10 km/h |
| 13:00 | overcast | 14 °C | 0.0 mm | 16 % | 15 km/h |
| 14:00 | overcast | 13 °C | 0.0 mm | 11 % | 12 km/h |
| 15:00 | overcast | 12 °C | 0.0 mm | 9 % | 12 km/h |
| 16:00 | overcast | 13 °C | 0.0 mm | 7 % | 11 km/h |
| 17:00 | overcast | 12 °C | 0.0 mm | 6 % | 8 km/h |
| 18:00 | overcast | 12 °C | 0.0 mm | 5 % | 5 km/h |
| 19:00 | overcast | 12 °C | 0.0 mm | 6 % | 5 km/h |
| 20:00 | overcast | 12 °C | 0.0 mm | 1 % | 8 km/h |
| 21:00 | overcast | 12 °C | 0.0 mm | 1 % | 7 km/h |
| 22:00 | overcast | 12 °C | 0.0 mm | 1 % | 8 km/h |
| 23:00 | overcast | 13 °C | 0.0 mm | 1 % | 12 km/h |
| 00:00 |  partly cloudy | 13 °C | 0.0 mm | 1 % | 15 km/h |
| 01:00 | overcast | 14 °C | 0.0 mm | 1 % | 18 km/h |
| 02:00 | overcast | 14 °C | 0.0 mm | 0 % | 19 km/h |
| 03:00 | overcast | 14 °C | 0.0 mm | 0 % | 18 km/h |
| 04:00 | overcast | 14 °C | 0.0 mm | 0 % | 19 km/h |
| 05:00 | overcast | 13 °C | 0.0 mm | 0 % | 18 km/h |
| 06:00 | overcast | 13 °C | 0.0 mm | 0 % | 17 km/h |
| 07:00 | overcast | 13 °C | 0.0 mm | 0 % | 18 km/h |
Location of Williamsville
Williamsville lies at 94 m, 113 m below the average of the 265 places we cover in Ontario (207 m). That makes it the 48th lowest of the 265. The main town, Toronto, lies 239 km to the west. The nearest places we cover are Kingscourt (1 km to the north), Kingston, Ontario (2 km to the south-east), Calvin Park (2 km to the west) and Polson Park (3 km to the west). With about 2,695 inhabitants according to GeoNames, Williamsville is the 245th largest of the 265 places we cover in Ontario.
Today is 6.5 °C above the November normal (6.9 °C).
Climate of Williamsville: 1991–2020 normals
In Williamsville, July is typically the warmest month (up to 25.6 °C on average), while January is the coldest at -9.9 °C. October sees the most rain, with around 103 mm.
By season (average highs, 1991–2020 normals): winter -0.8 °C and 221 mm of rain, spring 10.8 °C and 252 mm, summer 24.4 °C and 288 mm, autumn 13.8 °C and 286 mm. The wettest season is summer (27 % of the annual total), the driest winter (21 %).
| Max T (°C) | Min T (°C) | Rainfall (mm) | Rainy days | |
|---|---|---|---|---|
| January | -2.3 | -9.9 | 76 | 12 |
| February | -1.4 | -9.4 | 60 | 10 |
| March | 3.6 | -4.8 | 73 | 10 |
| April | 10.8 | 2.1 | 98 | 12 |
| May | 18.0 | 9.3 | 81 | 12 |
| June | 23.0 | 15.3 | 94 | 12 |
| July | 25.6 | 18.6 | 98 | 12 |
| August | 24.6 | 18.1 | 96 | 11 |
| September | 20.7 | 14.3 | 95 | 10 |
| October | 13.7 | 8.0 | 103 | 12 |
| November | 6.9 | 1.8 | 89 | 11 |
| December | 1.2 | -4.6 | 85 | 12 |
Compared with Toronto, the main town 239 km to the west, highs in the warmest month are 0.8 °C lower here, and the year brings 238 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: Amherstview (12 km to the west): summers 0.4 °C warmer and 42 mm drier a year; Gananoque (29 km to the east): almost identical normals; Greater Napanee (36 km to the west): summers 0.8 °C warmer and 74 mm drier a year. Among the 265 places we cover in Ontario whose normals come from the ERA5 reanalysis, Williamsville ranks 152nd for summer warmth and 23rd 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 Williamsville?
The warmest month in Williamsville is typically July, averaging 25.6 °C (1991–2020 normal). The coldest is January, at -9.9 °C.
How many rainy days does Williamsville get per year?
Williamsville sees about 134 rainy days a year, adding up to roughly 1047 mm of rainfall (1991–2020 normals).
How big is the gap between summer and winter in Williamsville?
Between July and January, the temperature gap in Williamsville runs to about 35.5 °C, based on the 1991–2020 normals.