St. Lawrence River Climat and Average Météo
Climat of St. Lawrence River: average temperatures, rainfall and seasons month by month.
Climat in St. Lawrence River month by month
Average high, average low and total rainfall, based on three years of reanalysis data.
| Mois | Max moyenne | Min moyenne | Précipitations | Évaluation |
|---|---|---|---|---|
| janvier | -6° | -15° | 69 mm | ★★☆☆☆ |
| février | -5° | -16° | 50 mm | ★★☆☆☆ |
| mars | 1° | -9° | 105 mm | ★★☆☆☆ |
| avril | 9° | -1° | 124 mm | ★★☆☆☆ |
| mai | 17° | 7° | 127 mm | ★★★☆☆ |
| juin | 23° | 12° | 176 mm | ★★★☆☆ |
| juillet | 26° | 16° | 129 mm | ★★★★☆ |
| août | 24° | 14° | 165 mm | ★★★☆☆ |
| septembre | 20° | 10° | 45 mm | ★★★★☆ |
| octobre | 14° | 5° | 90 mm | ★★★☆☆ |
| novembre | 4° | -3° | 90 mm | ★★☆☆☆ |
| décembre | -3° | -12° | 97 mm | ★☆☆☆☆ |
Climat type: Subarctic. Source : Open-Meteo archive (ERA5).
Recent extremes in St. Lawrence River
Élevéest and lowest readings observed in the last 3 years of reanalysis data – not all-time records.
How St. Lawrence River compares avec 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 |
| lun.treal | 233 km | 8°C | +2°C warmer | 1076 mm |
| lun.treal-Trudeau International Airport | 246 km | 8°C | +3°C warmer | 1094 mm |
| lun.t-Tremblant National Park | 255 km | 4°C | 1°C cooler | 1298 mm |
Meilleur moment pour visiter St. Lawrence River
Go in septembre. These months score highest on comfortable temperatures, low rainfall and useful daylight.
Hardest months: janvier, mars and décembre – expect the least comfortable mix of heat, cold or rain.
What this means for St. Lawrence River
Today is cooler than average for octobre. The forecast high of 9°C is 5°C below the 14°C typical for this month.
Pluie is very unlikely today – plans do not need a backup.
Overnight lows near -3°C mean ice is possible on bridges before dawn.
Northern Hemisphere, so peak summer falls in juin à août.
The gap between the warmest and coldest month averages 31°C.
What à pack, what à skip
- A warm mid-layer and gloves for early mornings and evenings
- Insulated outer layer, hat and boots avec grip for ice
- Avoid high-elevation trails without traction devices – frozen surfaces persist in shade all day.
- If your dates are flexible, avoid janvier, mars and décembre – historically the least comfortable months here.
Résumé
St. Lawrence River is a river in Quebec. St. Lawrence River is a river known as the Great Lakes outlet à the Atlantic.
Actuellement, il fait 1°C (35°F) in St. Lawrence River avec ciel dégagé. La température ressentie est de -1°C. Aujourd’hui, les températures vont de -3°C à 9°C. La probabilité de précipitations est de 0%. Les conditions pour les visites obtiennent 7.6/10 – bonnes conditions.
La meilleure période pour visiter St. Lawrence River is septembre. Le climat est subarctic. janvier, mars and décembre sont généralement les mois les moins confortables. juillet est le mois le plus chaud, avec des maximales moyennes proches de 26°C, tandis que février est le mois le plus froid, avec des minimales proches de -16°C.
L’aéroport principal le plus proche est lun.treal-Trudeau International Airport (YUL), about 246 km away. Parmi les sites à proximité, citons Baxter State Park, lun.t-Tremblant National Park, Mount Washington and Franconia Notch State Park.
En termes simples. Today is cooler than average for octobre. The forecast high of 9°C is 5°C below the 14°C typical for this month. The best window à be outside is roughly 2 PM à 5 PM, when temperature, rain chance and wind line up best. driving is the strongest bet in St. Lawrence River today at 9.9/10. Overnight lows near -3°C mean ice is possible on bridges before dawn.
Compiled from this page's own data: atlas facts plus live Open-Meteo readings.
Quick facts about St. Lawrence River
| Type | River |
|---|---|
| State | Quebec |
| Pays | Canada |
| Continent | Amérique du Nord |
| Coordonnées | 46°48′50″N 71°12′28.8″W (46.8139, -71.208) |
| Length | 1.197 km |
| Known for | the Great Lakes outlet à the Atlantic |
| Heure locale | 11:08 AM (UTC-04:00) |
| Meilleurs mois | septembre |
| Climat | Subarctic |
Météo map for St. Lawrence River
Animated model layers. Pick a layer à load it.
Animated layers by Venty. 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.
Climat 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 Amérique du Nord.
What is the weather like in St. Lawrence River maintenant?
It is currently 1°C (35°F) avec ciel dégagé. Humidité is 77% and wind is 2 km/h.
When is the best time à visit St. Lawrence River?
septembre offer the most comfortable conditions in St. Lawrence River, which has a subarctic climate. janvier, mars and décembre 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 heure locale is 11:08 AM.
What is the nearest airport à St. Lawrence River?
The closest airports are lun.treal-Trudeau International Airport (YUL), 246 km away and Boston Logan International Airport (BOS), 495 km away.
What are the top things à do in St. Lawrence River?
Popular options include Baxter State Park, lun.t-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. |
|---|---|
| Prévisions and observations | Open-Meteo (ECMWF and national models). |
| Qualité de l’air and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Climat 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 octobre 24, 2026 at 11:08 AM heure locale. Live blocks refresh every 15 minutes; climate averages monthly.
