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Weather in Saint John for October 2025

Your guide to Saint John weather in October - trends and predictions

    Official Weather Alert ⚠️

  • Weather Warning - See hour by hour.

    • Snow Forecast ❄️

  • Snowfall in Saint John during October is quite rare, with fewer than 2 snowy days on average.
    According to Saint John snow forecast for October 2025, no snow is expected until the end of the month.

    • Temperatures

  • Until now, October 2025 in Saint John is slightly cooler than the historical average by -1 °C.

  • The forecast for the next days in Saint John predicts a temperature of 8.9 °C, which is cooler than the historical average.

  • In general, the average temperature in Saint John at the beginning of October is 16.3 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 11.6 °C by the end of October.

    • Rain 🌧️

  • The climate of Saint John in October is notably wet, with an average of 13 rainy days, and a total of 170.7 mm of precipitation.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
17
Dry days
Average rainy days
13
Rainy days
Average snowy days
1
Snow days
Average temperatures
13°/7°
Temperatures
Average wind speed
18 km/h
Avg max wind
Average humidity
82 %
Avg humidity

Saint John Weather October

Move between months or click on a day
September
November
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Mist
17°
2
Mist
17°
3
Patchy rain possible
18°
4
Overcast
16°
5
Mist
15°
6
Fog
16°
7
Overcast
15°
8
Light rain
15°
9
Light rain shower
12°
10
Patchy rain possible
13°
11
Fog
15°
12
Light drizzle
14°
13
Light rain shower
14°
14
Patchy rain possible
12°
15
Patchy rain possible
11°
16
Light rain shower
10°
17
Light rain
11°
18
Patchy rain possible
13°
19
Patchy rain possible
15°
20
Patchy rain possible
14°
21
Heavy rain
14°
22
Light rain shower
14°
23
Patchy rain possible
11°
24
Partly cloudy
12°
25
Overcast
12°
26
Fog
13°
27
Fog
10°
28
Overcast
11°
29
Cloudy
9°
30
Weather Alert Patchy rain possible
12°
31
Heavy rain
14°

Temperatures trend during October in Saint John

See the weather trend as well as the moving average line

October weather in Saint John day by day

Click on a date for more information
September November
Date Weather Temperatures Rain UV More
1 Oct. Mist
Mist
 17° /8° 0 mm 4
2 Oct. Mist
Mist
 17° /6° 0 mm 4
3 Oct. Patchy rain possible
Patchy rain possible
 18° /8° 0 mm 5
4 Oct. Overcast
Overcast
 16° /11° 0 mm 4
5 Oct. Mist
Mist
 15° /10° 2.6 mm 3
6 Oct. Fog
Fog
 16° /11° 0 mm 4
7 Oct. Overcast
Overcast
 15° /12° 7.5 mm 3
8 Oct. Light rain
Light rain
 15° /9° 24.8 mm 3
9 Oct. Light rain shower
Light rain shower
 12° /5° 3.9 mm 3
10 Oct. Patchy rain possible
Patchy rain possible
 13° /6° 0.2 mm 3
11 Oct. Fog
Fog
 15° /7° 0.1 mm 4
12 Oct. Light drizzle
Light drizzle
 14° /7° 4.6 mm 3
13 Oct. Light rain shower
Light rain shower
 14° /6° 1.9 mm 3
14 Oct. Patchy rain possible
Patchy rain possible
 12° /7° 26.4 mm 3
15 Oct. Patchy rain possible
Patchy rain possible
 11° /6° 0.1 mm 3
16 Oct. Light rain shower
Light rain shower
 10° /6° 2.3 mm 2
17 Oct. Light rain
Light rain
 11° /5° 3.8 mm 3
18 Oct. Patchy rain possible
Patchy rain possible
 13° /6° 0.1 mm 3
19 Oct. Patchy rain possible
Patchy rain possible
 15° /8° 0.1 mm 4
20 Oct. Patchy rain possible
Patchy rain possible
 14° /8° 0 mm 4
21 Oct. Heavy rain
Heavy rain
 14° /10° 29 mm 3
22 Oct. Light rain shower
Light rain shower
 14° /9° 20.8 mm 4
23 Oct. Patchy rain possible
Patchy rain possible
 11° /6° 3.3 mm 3
24 Oct. Partly cloudy
Partly cloudy
 12° /6° 0 mm 4
25 Oct. Overcast
Overcast
 12° /6° 0.2 mm 3
26 Oct. Fog
Fog
 13° /6° 3.6 mm 3
27 Oct. Fog
Fog
 10° /5° 0.1 mm 3
28 Oct. Overcast
Overcast
 11° /5° 0.1 mm 3
29 Oct. Cloudy
Cloudy
 9° /1° 0 mm 3
30 Oct. Patchy rain possible
Patchy rain possible
 12° /7° 1.9 mm 0.5
31 Oct. Heavy rain
Heavy rain
 14° /11° 95.2 mm 0.1
Next
Important Notice
Our weather forecast for Saint John in October is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Saint John forecast closer to your planned date for the most up-to-date weather information.
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Saint John in October - FAQ

What are the expected maximum and minimum temperatures in Saint John during October?
During October, expect a variety of temperatures with highs around 13° and lows near 7°, suitable for diverse activities and preferences.
How much rainfall should be expected in Saint John during October?
Significant rainfall exceeding 170.7 mm is expected in Saint John during October, occurring over more than 13 days. Preparing for wet conditions is recommended in your planning.
Will it snow in Saint John in October 2025?
Saint John typically sees 3.045 cm of snowfall during October.
What are the typical wind conditions in Saint John during October?
The average wind speed in Saint John during October is 18 km/h, suggesting breezy to windy conditions, depending on your activities.

October rainfall patterns in Saint John

Explore the daily rainfall trends and prepare for Saint Johns October weather 💧

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Location coordinates Where is Saint John?

Get accurate weather forecasts for Saint John, located at latitude 45.271 and longitude -66.056. Stay updated with localized weather information tailored for Saint John.

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