St. Lawrence River Klima and Average Vær
Klima of St. Lawrence River: average temperatures, rainfall and seasons month by month.
Klima in St. Lawrence River month by month
Average high, average low and total rainfall, based on three years of reanalysis data.
| Måned | Avg high | Avg low | Regnfall | Rating |
|---|---|---|---|---|
| januar | -6° | -15° | 69 mm | ★★☆☆☆ |
| februar | -5° | -16° | 50 mm | ★★☆☆☆ |
| mars | 1° | -9° | 105 mm | ★★☆☆☆ |
| april | 9° | -1° | 124 mm | ★★☆☆☆ |
| mai | 17° | 7° | 127 mm | ★★★☆☆ |
| juni | 23° | 12° | 176 mm | ★★★☆☆ |
| juli | 26° | 16° | 129 mm | ★★★★☆ |
| august | 24° | 14° | 165 mm | ★★★☆☆ |
| september | 20° | 10° | 45 mm | ★★★★☆ |
| oktober | 14° | 5° | 90 mm | ★★★☆☆ |
| november | 4° | -3° | 90 mm | ★★☆☆☆ |
| desember | -3° | -12° | 97 mm | ★☆☆☆☆ |
Klima type: Subarctic. Kilde: Open-Meteo archive (ERA5).
Recent extremes in St. Lawrence River
Høyest and lowest readings observed in the last 3 years of reanalysis data - not all-time records.
How St. Lawrence River compares med 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 |
| mantreal | 233 km | 8°C | +2°C warmer | 1076 mm |
| mantreal-Trudeau International Airport | 246 km | 8°C | +3°C warmer | 1094 mm |
| mant-Tremblant National Park | 255 km | 4°C | 1°C cooler | 1298 mm |
Beste tid å besøke St. Lawrence River
Go in september. These months score highest on comfortable temperatures, low rainfall and useful daylight.
Hardest months: januar, mars and desember - expect the least comfortable mix of heat, cold or rain.
What this means for St. Lawrence River
Today is cooler than average for september. The forecast high of 13°C is 7.1°C below the 20°C typical for this month.
A 32% chance means rain is likely somewhere nearby at some point - carry a layer, but do not cancel.
No weather-related travel disruption is expected today. Roads and airports should run normally.
Northern Hemisphere, so peak summer falls in juni til august.
The gap between the warmest and coldest month averages 31°C.
What til pack, what til skip
- Layers - the daily swing is 17°C, so mornings feel nothing like afternoons
- If your dates are flexible, avoid januar, mars and desember - historically the least comfortable months here.
Sammendrag
St. Lawrence River is a river in Quebec. St. Lawrence River is a river known as the Great Lakes outlet til the Atlantic.
Akkurat nå er det 12°C (54°F) in St. Lawrence River med delvis skyet. Det føles som 8°C. I dag varierer temperaturen mellom 11°C til 13°C. Sannsynligheten for nedbør er 32%. Sightseeing conditions score 7.8/10 - gode forhold.
Beste tidspunkt å besøke St. Lawrence River is september. Klimaet er subarctic. januar, mars and desember tend til be the least comfortable months. juli is the warmest month med average highs near 26°C, while februar is the coldest med lows near -16°C.
The closest major airport is mantreal-Trudeau International Airport (YUL), about 246 km away. Nearby highlights include Baxter State Park, mant-Tremblant National Park, Mount Washington and Franconia Notch State Park.
Kort sagt. Today is cooler than average for september. The forecast high of 13°C is 7.1°C below the 20°C typical for this month. The best window til be outside is roughly 2 PM til 5 PM, when temperature, rain chance and wind line up best. fishing is the strongest bet in St. Lawrence River today at 8.5/10. No weather-related travel disruption is expected today. Roads and airports should run normally.
Compiled from this page's own data: atlas facts plus live Open-Meteo readings.
Quick facts about St. Lawrence River
| Type | River |
|---|---|
| State | Quebec |
| Land | Canada |
| Kontinent | Nord-Amerika |
| Koordinater | 46°48′50″N 71°12′28.8″W (46.8139, -71.208) |
| Length | 1.197 km |
| Known for | the Great Lakes outlet til the Atlantic |
| Lokal tid | 8:05 PM (UTC-04:00) |
| Best months | september |
| Klima | Subarctic |
Vær map for St. Lawrence River
Animated model layers. Pick a layer til load it.
Animated layers by Vindy. 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.
Klima 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 Nord-Amerika.
What is the weather like in St. Lawrence River akkurat nå?
It is currently 12°C (54°F) med delvis skyet. Luftfuktighet is 81% and wind is 26 km/h.
When is the best time til visit St. Lawrence River?
september offer the most comfortable conditions in St. Lawrence River, which has a subarctic climate. januar, mars and desember 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 8:05 PM.
What is the nearest airport til St. Lawrence River?
The closest airports are mantreal-Trudeau International Airport (YUL), 246 km away and Boston Logan International Airport (BOS), 495 km away.
What are the top things til do in St. Lawrence River?
Popular options include Baxter State Park, mant-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. |
|---|---|
| Værmelding and observations | Open-Meteo (ECMWF and national models). |
| Luftkvalitet and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Klima 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 september 30, 2026 at 8:05 PM local time. Live blocks refresh every 15 minutes; climate averages monthly.
