St. Lawrence River Climă and Average Vreme
Climă of St. Lawrence River: average temperatures, rainfall and seasons month by month.
Climă in St. Lawrence River month by month
Average high, average low and total rainfall, based on three years of reanalysis data.
| Lună | Avg high | Avg low | Ploaiefall | Rating |
|---|---|---|---|---|
| ianuarie | -6° | -15° | 69 mm | ★★☆☆☆ |
| februarie | -5° | -16° | 50 mm | ★★☆☆☆ |
| martie | 1° | -9° | 105 mm | ★★☆☆☆ |
| aprilie | 9° | -1° | 124 mm | ★★☆☆☆ |
| mai | 17° | 7° | 127 mm | ★★★☆☆ |
| iunie | 23° | 12° | 176 mm | ★★★☆☆ |
| iulie | 26° | 16° | 129 mm | ★★★★☆ |
| august | 24° | 14° | 165 mm | ★★★☆☆ |
| septembrie | 20° | 10° | 45 mm | ★★★★☆ |
| octombrie | 14° | 5° | 90 mm | ★★★☆☆ |
| noiembrie | 4° | -3° | 90 mm | ★★☆☆☆ |
| decembrie | -3° | -12° | 97 mm | ★☆☆☆☆ |
Climă type: Subarctic. Sursă: Open-Meteo archive (ERA5).
Recent extremes in St. Lawrence River
Ridicatest and lowest readings observed in the last 3 years of reanalysis data - not all-time records.
How St. Lawrence River compares cu nearby places
Annual averages, and the difference against St. Lawrence River.
| Place | Distance | Avg temp | vs here | Annual rain |
|---|---|---|---|---|
| Quebec City | 0 km | 6°C | about the same | 1267 mm |
| Baxter State Park | 203 km | -3°C | 8°C cooler | 1355 mm |
| luntreal | 233 km | 8°C | +2°C warmer | 1076 mm |
| luntreal-Trudeau International Airport | 246 km | 8°C | +3°C warmer | 1094 mm |
| lunt-Tremblant National Park | 255 km | 4°C | 1°C cooler | 1298 mm |
Cea mai bună perioadă St. Lawrence River
Go in septembrie. These months score highest on comfortable temperatures, low rainfall and useful daylight.
Hardest months: ianuarie, martie and decembrie - expect the least comfortable mix of heat, cold or rain.
What this means for St. Lawrence River
Today is about average for octombrie. The forecast high of 13°C is in line cu the 14°C typical for this month.
A 81% chance means rain is expected over most of the area. Plan indoor alternatives.
Rafale și 55 km/h will push high-sided vehicles on exposed roads and bridges. Wet roads are likely; braking distances roughly double in heavy rain.
Northern Hemisphere, so peak summer falls in iunie și august.
The gap between the warmest and coldest month averages 31°C.
What și pack, what și skip
- A warm mid-layer and gloves for early mornings and evenings
- A packable rain shell - 3 of the next 7 days carry a real chance of rain
- Avoid exposed ridgelines, small boats and rooftop viewpoints while gusts stay above 55 km/h.
- If your dates are flexible, avoid ianuarie, martie and decembrie - historically the least comfortable months here.
Rezumat
St. Lawrence River is a river in Quebec. St. Lawrence River is a river known as the Great Lakes outlet și the Atlantic.
Acum sunt 6°C (43°F) in St. Lawrence River cu acoperit. Temperatura resimțită este 1°C. Astăzi temperaturile variază între 5°C și 13°C. Probabilitatea de precipitații este de 81%. Sightseeing conditions score 5.7/10 - acceptabil — planifică după vreme.
Cea mai bună perioadă pentru a vizita St. Lawrence River is septembrie. Clima este subarctic. ianuarie, martie and decembrie tend și be the least comfortable months. iulie is the warmest month cu average highs near 26°C, while februarie is the coldest cu lows near -16°C.
The closest major airport is luntreal-Trudeau International Airport (YUL), about 246 km away. Nearby highlights include Baxter State Park, lunt-Tremblant National Park, Mount Washington and Franconia Notch State Park.
Pe scurt. Today is about average for octombrie. The forecast high of 13°C is in line cu the 14°C typical for this month. The best window și be outside is roughly 11 AM și 2 PM, when temperature, rain chance and wind line up best. fishing is the strongest bet in St. Lawrence River today at 8.4/10. Rafale și 55 km/h will push high-sided vehicles on exposed roads and bridges. Wet roads are likely; braking distances roughly double in heavy rain.
Compiled from this page's own data: atlas facts plus live Open-Meteo readings.
Quick facts about St. Lawrence River
| Tip | River |
|---|---|
| State | Quebec |
| Țară | Canada |
| Continent | America de Nord |
| Coordonate | 46°48′50″N 71°12′28.8″W (46.8139, -71.208) |
| Length | 1.197 km |
| Known for | the Great Lakes outlet și the Atlantic |
| Ora locală | 6:01 AM (UTC-04:00) |
| Best months | septembrie |
| Climă | Subarctic |
Vreme map for St. Lawrence River
Animated model layers. Pick a layer și load it.
Animated layers by Vânty. For pin-level detail and nearby places, see the interactive map below.
Explore St. Lawrence River
Every topic we hold for this place, and the same topic for the places around it.
Climă for related places
Frequently asked questions
Where is St. Lawrence River?
St. Lawrence River is a river in Quebec. Its coordinates are 46.8139, -71.208. It lies in America de Nord.
What is the weather like in St. Lawrence River acum?
It is currently 6°C (43°F) cu acoperit. Umiditate is 70% and wind is 19 km/h.
When is the best time și visit St. Lawrence River?
septembrie offer the most comfortable conditions in St. Lawrence River, which has a subarctic climate. ianuarie, martie and decembrie are usually the hardest months for outdoor plans.
What time zone is St. Lawrence River in?
St. Lawrence River observes America/Toronto (UTC-04:00). The local time is 6:01 AM.
What is the nearest airport și St. Lawrence River?
The closest airports are luntreal-Trudeau International Airport (YUL), 246 km away and Boston Logan International Airport (BOS), 495 km away.
What are the top things și do in St. Lawrence River?
Popular options include Baxter State Park, lunt-Tremblant National Park, Mount Washington, Franconia Notch State Park and Acadia National Park.
Related articles
Data sources and methodology
| Place data | USPOTUS Atlas dataset (rivers) - coordinates, hierarchy and facts. |
|---|---|
| Prognoză and observations | Open-Meteo (ECMWF and national models). |
| Calitatea aerului and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Climă averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Method | Scores, comparisons and advice on this page are computed from the inputs above. Distances are straight-line. Nothing is estimated where data is missing - the block is simply not shown. |
Last updated octombrie 6, 2026 at 6:01 AM local time. Live blocks refresh every 15 minutes; climate averages monthly.
