Weather in Portneuf
Quebec, 12 m · continuously updated
Deschambault (6 km) · 9 °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
Portneuf weather: the next 24 hours
Updated hourly.
Portneuf 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 Portneuf
Neighbouring towns, as the crow flies.
Official weather warnings
No active warning for Portneuf.
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 Portneuf?
No active warning for Portneuf.
Latest measurement near Portneuf
Measured at Deschambault, 6 km away from Portneuf, November 2, 08:00 EST. This Environment and Climate Change Canada weather station is at an elevation of 61 m (Quebec). These are measured values, not a forecast.
| Temperature | 9.0 °C |
|---|---|
| Wind | 2 km/h W |
| Gusts, last hour | — |
| Precipitation, last hour | 0.0 mm |
| Humidity | 86 % |
| Pressure (sea level) | — |
Past 24 hours: low -0.8 °C, high 12.0 °C, 0.0 mm of precipitation.
Portneuf lies at about 12 m; the station is at 61 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 Portneuf
The weather station nearest to Portneuf, Donnacona located 61 m above sea level, is 6 km away; its records cover 1919–2020. In November, the mean temperature there is −0.2 °C over 1991–2020, 1.0 °C more than over 1961–1990 (−1.2 °C), with about – mm of rain. The warmest month ever measured is July 1921 (21.4 °C), the coldest February 1934 (−20.3 °C). See the full series of Donnacona
Today in Portneuf
- No washing outside today: rain, or a risk of rain, covers the hours when it could dry. How it is calculated
- Best time to air the house: tomorrow, between 6:00 and 8:00. The outdoor dew point drops to 5.5 °C; once warmed to 20 °C, that air holds only 39 % humidity, against 50 % in a typical home: opening the windows dries the house. How it is calculated
- Garden: 21.9 mm of rain expected within 48 h, against a need of 0.7 mm. No need to water, the rain will do it. How it is calculated
- Terrace and barbecue between 18:00 and 23:00: dry but cool, 10 °C at 8 pm and wind at 5 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 Portneuf
Today (Monday 2 Nov) in Portneuf: light drizzle, 4 to 11 °C, precipitation 0.4 mm (26 %), wind up to 11 km/h. Tomorrow: light rain, 5 to 10 °C.
| Day | Weather | Min | Max | Precip. | Wind |
|---|---|---|---|---|---|
| Today | light drizzle | 4 °C | 11 °C | 0.4 mm | 11 km/h |
| Tomorrow | light rain | 5 °C | 10 °C | 20.8 mm | 18 km/h |
| Wed 4 Nov | light drizzle | 5 °C | 16 °C | 0.7 mm | 14 km/h |
| Thu 5 Nov | showers | 10 °C | 15 °C | 6.4 mm | 16 km/h |
| Fri 6 Nov | light drizzle | 10 °C | 15 °C | 0.1 mm | 10 km/h |
| Sat 7 Nov | light rain | 9 °C | 11 °C | 21.8 mm | 14 km/h |
| Sun 8 Nov | drizzle | 4 °C | 10 °C | 1.9 mm | 26 km/h |
Tomorrow's weather in Portneuf
Tomorrow, Tuesday 3 Nov, in Portneuf: light rain, from 5 to 10 °C, 20.8 mm of precipitation (probability 86 %), wind up to 18 km/h.
| Hour | Weather | Temp. | Precip. | Chance | Wind |
|---|---|---|---|---|---|
| 00:00 |  fog | 10 °C | 0.0 mm | 29 % | 3 km/h |
| 03:00 |  light rain | 10 °C | 1.4 mm | 66 % | 5 km/h |
| 06:00 |  drizzle | 7 °C | 0.7 mm | 68 % | 14 km/h |
| 09:00 | light drizzle | 6 °C | 0.4 mm | 65 % | 17 km/h |
| 12:00 | light drizzle | 5 °C | 0.4 mm | 72 % | 17 km/h |
| 15:00 | light rain | 5 °C | 1.8 mm | 80 % | 15 km/h |
| 18:00 | heavy drizzle | 5 °C | 1.1 mm | 60 % | 16 km/h |
| 21:00 | light rain | 5 °C | 1.8 mm | 83 % | 17 km/h |
Frequently asked questions
Will it rain tomorrow in Portneuf?
Yes: 20.8 mm expected, probability 86 %.
How warm will it be tomorrow in Portneuf?
Between 5 and 10 °C.
The weekend
This weekend in Portneuf: Saturday light rain, 9 to 11 °C, Sunday drizzle, 4 to 10 °C.
| Day | Weather | Min | Max | Precip. | Wind |
|---|---|---|---|---|---|
| Sat 7 Nov | light rain | 9 °C | 11 °C | 21.8 mm | 14 km/h |
| Sun 8 Nov | drizzle | 4 °C | 10 °C | 1.9 mm | 26 km/h |
Hour by hour
The next 48 hours in Portneuf, hour by hour: temperature from 5 to 11 °C, 21.9 mm of rain expected.
| Hour | Weather | Temp. | Precip. | Chance | Wind |
|---|---|---|---|---|---|
| 08:00 | light drizzle | 8 °C | 0.4 mm | 15 % | 11 km/h |
| 09:00 |  overcast | 9 °C | 0.0 mm | 16 % | 5 km/h |
| 10:00 | overcast | 10 °C | 0.0 mm | 10 % | 8 km/h |
| 11:00 | overcast | 10 °C | 0.0 mm | 9 % | 8 km/h |
| 12:00 | overcast | 10 °C | 0.0 mm | 13 % | 8 km/h |
| 13:00 | overcast | 10 °C | 0.0 mm | 12 % | 8 km/h |
| 14:00 | overcast | 11 °C | 0.0 mm | 5 % | 9 km/h |
| 15:00 | overcast | 11 °C | 0.0 mm | 3 % | 6 km/h |
| 16:00 | overcast | 11 °C | 0.0 mm | 3 % | 3 km/h |
| 17:00 | overcast | 10 °C | 0.0 mm | 4 % | 1 km/h |
| 18:00 | overcast | 10 °C | 0.0 mm | 7 % | 1 km/h |
| 19:00 | overcast | 10 °C | 0.0 mm | 11 % | 4 km/h |
| 20:00 | overcast | 10 °C | 0.0 mm | 17 % | 4 km/h |
| 21:00 | overcast | 10 °C | 0.0 mm | 16 % | 7 km/h |
| 22:00 | overcast | 10 °C | 0.0 mm | 21 % | 7 km/h |
| 23:00 | overcast | 10 °C | 0.0 mm | 26 % | 6 km/h |
| 00:00 | fog | 10 °C | 0.0 mm | 29 % | 3 km/h |
| 01:00 | overcast | 10 °C | 0.0 mm | 33 % | 5 km/h |
| 02:00 | light drizzle | 10 °C | 0.4 mm | 45 % | 3 km/h |
| 03:00 | light rain | 10 °C | 1.4 mm | 66 % | 5 km/h |
| 04:00 | overcast | 9 °C | 0.0 mm | 69 % | 2 km/h |
| 05:00 | light rain | 9 °C | 1.4 mm | 70 % | 10 km/h |
| 06:00 | drizzle | 7 °C | 0.7 mm | 68 % | 14 km/h |
| 07:00 | drizzle | 6 °C | 0.7 mm | 62 % | 14 km/h |
| 08:00 | overcast | 6 °C | 0.0 mm | 74 % | 15 km/h |
| 09:00 | light drizzle | 6 °C | 0.4 mm | 65 % | 17 km/h |
| 10:00 | light rain | 5 °C | 1.8 mm | 75 % | 18 km/h |
| 11:00 | light drizzle | 5 °C | 0.4 mm | 57 % | 17 km/h |
| 12:00 | light drizzle | 5 °C | 0.4 mm | 72 % | 17 km/h |
| 13:00 | light drizzle | 5 °C | 0.4 mm | 86 % | 17 km/h |
| 14:00 | heavy drizzle | 5 °C | 1.1 mm | 84 % | 17 km/h |
| 15:00 | light rain | 5 °C | 1.8 mm | 80 % | 15 km/h |
| 16:00 | light rain | 5 °C | 1.4 mm | 74 % | 16 km/h |
| 17:00 | heavy drizzle | 5 °C | 1.1 mm | 59 % | 16 km/h |
| 18:00 | heavy drizzle | 5 °C | 1.1 mm | 60 % | 16 km/h |
| 19:00 | light drizzle | 5 °C | 0.4 mm | 59 % | 17 km/h |
| 20:00 | light drizzle | 5 °C | 0.4 mm | 83 % | 18 km/h |
| 21:00 | light rain | 5 °C | 1.8 mm | 83 % | 17 km/h |
| 22:00 | light rain | 5 °C | 1.8 mm | 83 % | 15 km/h |
| 23:00 | light rain | 5 °C | 1.9 mm | 83 % | 16 km/h |
| 00:00 | light drizzle | 5 °C | 0.6 mm | 83 % | 14 km/h |
| 01:00 | light drizzle | 6 °C | 0.1 mm | 83 % | 12 km/h |
| 02:00 | overcast | 6 °C | 0.0 mm | 87 % | 9 km/h |
| 03:00 | overcast | 6 °C | 0.0 mm | 87 % | 8 km/h |
| 04:00 | overcast | 7 °C | 0.0 mm | 87 % | 7 km/h |
| 05:00 | overcast | 7 °C | 0.0 mm | 87 % | 6 km/h |
| 06:00 | overcast | 8 °C | 0.0 mm | 87 % | 6 km/h |
| 07:00 | overcast | 8 °C | 0.0 mm | 87 % | 5 km/h |
Location of Portneuf
Portneuf lies at 12 m, 89 m below the average of the 301 places we cover in Quebec (101 m). That makes it the 26th lowest of the 301. The main town, Montréal, lies 185 km to the south-west. The nearest places we cover are Cap-Santé (8 km to the east), Saint-Marc-des-Carrières (12 km to the west), Donnacona (13 km to the east) and Pont-Rouge (16 km to the north-east). With about 3,107 inhabitants according to GeoNames, Portneuf is the 249th largest of the 301 places we cover in Quebec.
Today is 7.0 °C above the November normal (4.3 °C).
Climate of Portneuf: 1991–2020 normals
In Portneuf, July is typically the warmest month (up to 24.7 °C on average), while January is the coldest at -15.4 °C. July sees the most rain, with around 136 mm.
By season (average highs, 1991–2020 normals): winter -4.4 °C and 248 mm of rain, spring 9.6 °C and 287 mm, summer 23.7 °C and 376 mm, autumn 11.8 °C and 340 mm. The wettest season is summer (30 % of the annual total), the driest winter (20 %).
| Max T (°C) | Min T (°C) | Rainfall (mm) | Rainy days | |
|---|---|---|---|---|
| January | -6.4 | -15.4 | 84 | 12 |
| February | -4.3 | -13.4 | 66 | 10 |
| March | 1.6 | -7.5 | 80 | 11 |
| April | 9.1 | -0.5 | 102 | 12 |
| May | 18.0 | 7.4 | 105 | 13 |
| June | 22.8 | 13.2 | 116 | 12 |
| July | 24.7 | 16.1 | 136 | 15 |
| August | 23.6 | 15.4 | 123 | 14 |
| September | 19.3 | 11.2 | 115 | 12 |
| October | 11.8 | 4.9 | 125 | 14 |
| November | 4.3 | -2.0 | 100 | 12 |
| December | -2.6 | -10.5 | 98 | 14 |
Compared with Montréal, the main town 185 km to the south-west, highs in the warmest month are the same here, and the year brings 153 mm more precipitation. In 6 months the average low falls below 0 °C (January, February, March, April, November and December); in 3 months the average high exceeds 20 °C (June, July and August).
Nearby places with normals of their own (from another station or reanalysis grid cell) compare as follows: Cap-Santé (8 km to the east): summers 0.1 °C cooler and 26 mm wetter a year; Saint-Raymond, Quebec, 142 m (23 km to the north): summers 0.9 °C cooler and 168 mm wetter a year; Neuville (23 km to the east): summers 0.1 °C cooler and 38 mm wetter a year. Among the 301 places we cover in Quebec whose normals come from the ERA5 reanalysis, Portneuf ranks 151st for summer warmth and 29th for annual precipitation. The warmest summers are in Le Sud-Ouest, Brossard and 2 other places and the coolest in Puvirnituq; the wettest year is in Saint-Raymond (Quebec, 142 m) and the driest in Puvirnituq.
What is the warmest month in Portneuf?
The warmest month in Portneuf is typically July, averaging 24.7 °C (1991–2020 normal). The coldest is January, at -15.4 °C.
How many rainy days does Portneuf get per year?
Portneuf sees about 149 rainy days a year, adding up to roughly 1250 mm of rainfall (1991–2020 normals).
How big is the gap between summer and winter in Portneuf?
Between July and January, the temperature gap in Portneuf runs to about 40.1 °C, based on the 1991–2020 normals.