Châteauguay, CA Weather Forecast - Airpult Châteauguay =========== Roussillon, Quebec, [Canada](https://airpult.com/climate/ca) [View stargazing score](https://airpult.com/stargazing/ca/chateauguay/249daxowc91xyzvkydsck)[View climate insights](https://airpult.com/climate/ca/chateauguay/249daxowc91xyzvkydsck)[View historical weather data](https://airpult.com/history/ca/chateauguay/249daxowc91xyzvkydsck) Current Weather --------------- 9° (48°) Breezy Feels Like: 13° (55°) Min: 5° (42°) Max: 13° (55°) The next few hours will be clear, with tomorrow reaching 13°C and dropping to 6°C. The coming days will be partly cloudy throughout the day. Hourly Forecast --------------- | Time | Temperature | Rain chance | | --- | --- | --- | | 6pm | 9°C (49°F) | 0% | | 7pm | 8°C (47°F) | 0% | | 8pm | 7°C (45°F) | 0% | | 9pm | 7°C (44°F) | 0% | | 10pm | 6°C (43°F) | 0% | | 11pm | 5°C (42°F) | 0% | | 12am | 5°C (40°F) | 0% | | 1am | 4°C (39°F) | 0% | | 2am | 4°C (38°F) | 0% | | 3am | 3°C (38°F) | 0% | | 4am | 3°C (37°F) | 0% | | 5am | 2°C (36°F) | 0% | | 6am | 2°C (35°F) | 0% | | 7am | 1°C (34°F) | 0% | | 8am | 1°C (34°F) | 0% | | 9am | 3°C (37°F) | 0% | | 10am | 4°C (38°F) | 0% | | 11am | 7°C (45°F) | 0% | | 12pm | 8°C (46°F) | 0% | | 1pm | 9°C (48°F) | 0% | | 2pm | 10°C (50°F) | 0% | | 3pm | 11°C (52°F) | 0% | | 4pm | 12°C (54°F) | 0% | | 5pm | 12°C (54°F) | 0% | Air Quality ----------- 17 Good Air quality is satisfactory, and air pollution poses little or no risk. GoodHazardous Daylight Hours -------------- 07:34 Sunrise 17:42 Sunset 10 hours 7 minutes of sunlight today Moon ---- [Full Moon](https://airpult.com/astronomy/moon-phases) 17:42 Moonrise 08:08 Moonset Daily Forecast -------------- Today 5° (42°) 13° (55°) Tuesday 1° (34°) 13° (55°) Wednesday 5° (42°) 12° (53°) Thursday 3° (37°) 11° (52°) Friday 0° (32°) 11° (52°) Saturday -2° (29°) 11° (52°) Sunday -2° (29°) 12° (54°) Sunday -2° (28°) 13° (55°) Monday 0° (31°) 8° (47°) Tuesday 4° (40°) 10° (51°) Resources --------- [Ocean Currents Explained: How the Ocean Shapes Weather and Climate![Ocean Currents Explained: How the Ocean Shapes Weather and Climate](https://cdn.airpult.com/storage/mwm7r2fav9jzey9d9m9x.jpg)](https://airpult.com/resources/ocean-currents)[Rainbows Explained: Why They Form and Where to Look![Rainbows Explained: Why They Form and Where to Look](https://cdn.airpult.com/storage/0mpjzanljyy1bn930cya.png)](https://airpult.com/resources/rainbows)[How Weather Radar and Satellite Imagery Work![How Weather Radar and Satellite Imagery Work](https://cdn.airpult.com/storage/hnhdi2zur73osoon7n9y.png)](https://airpult.com/resources/radar-satellite) UV Index -------- No protection needed 0Low LowExtreme Humidity -------- 62%Comfortable LowHigh Looking at the night sky? ------------------------- See moon phases, eclipses, and seasons for this year. [View astronomy](https://airpult.com/astronomy) Current stargazing conditions? ------------------------------ See sky darkness, moon phase, and the best viewing window for Châteauguay. [View stargazing score](https://airpult.com/stargazing/ca/chateauguay/249daxowc91xyzvkydsck) Weather in Châteauguay tomorrow, October 27, 2026 ------------------------------------------------- Expect a muted, overcast feel in Châteauguay on October 27, 2026 as cloud persists. Brighter breaks, if they arrive, should stay brief. Cloud leads the morning, peaking close to 92% near 11:00. Sunshine has little room until later in the day. (Expect a muted, overcast feel in Châteauguay on October 27, 2026 as cloud persists. Brighter breaks, if they arrive, should stay brief. Cloud leads the morning, peaking close to 92% near 11:00. Sunshine has little room until later in the day.) The day peaks near 13°C and cools toward 1°C. Relative humidity sits between 59% and 100%, reaching its peak around 11:00. Winds turn strong, with the highest speeds near 00:00 at about 25 km/h. (The day peaks near 55°F and cools toward 34°F. Relative humidity sits between 59% and 100%, reaching its peak around 11:00. Winds turn strong, with the highest speeds near 00:00 at about 16 mph.) Afternoon skies stay clogged, peaking close to 91% near 12:00. The grey theme continues rather than clearing out. Visibility holds near 15 km, though it can fall to 9.6 km. The sun rises at 07:36 and sets at 17:41, for a total of 10 hours 4 minutes of sunlight today. (Afternoon skies stay clogged, peaking close to 91% near 12:00. The grey theme continues rather than clearing out. Visibility holds near 9.3 mi, though it can fall to 5.9 mi. The sun rises at 07:36 and sets at 17:41, for a total of 10 hours 4 minutes of sunlight today.) Overall, Châteauguay on October 27, 2026 feels driven by the wind, with speeds near 25 km/h and a high around 13°C. (Overall, Châteauguay on October 27, 2026 feels driven by the wind, with speeds near 16 mph and a high around 55°F.) [Powered by Airpult](https://platform.airpult.com) Frequently asked questions about weather in Châteauguay ------------------------------------------------------- ### How warm does it get in Châteauguay? The warmest month in Châteauguay is July, with average high temperatures of 27°C. The average temperature during this period is around 22°C. (The warmest month in Châteauguay is July, with average high temperatures of 80°F. The average temperature during this period is around 72°F.) ### How cold does it get in Châteauguay? The coldest month in Châteauguay is January, with average low temperatures of -10°C. The average temperature during this period is around -7°C. (The coldest month in Châteauguay is January, with average low temperatures of 14°F. The average temperature during this period is around 20°F.) ### What is the wettest time of year in Châteauguay? The wettest month in Châteauguay is October, with an average of 125 mm of precipitation. (The wettest month in Châteauguay is October, with an average of 4.9 in of precipitation.) ### What is the driest time of year in Châteauguay? The driest month in Châteauguay is September, with an average of 70 mm of precipitation. (The driest month in Châteauguay is September, with an average of 2.8 in of precipitation.) [View full climate insights for Châteauguay →](https://airpult.com/climate/ca/chateauguay/249daxowc91xyzvkydsck)