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Weather in Fort William for September 2026

Your guide to Fort William weather in September - trends and predictions

    Snow Forecast ❄️

  • Snowfall in Fort William during September is quite rare, with fewer than 2 snowy days on average.
    According to Fort William snow forecast for September 2026, no snow is expected in the next 2 weeks.

    • Temperatures

  • Until now, September 2026 in Fort William is slightly cooler than the historical average by 0.7 °C.

  • The forecast for the next days in Fort William predicts temperatures to be around 12 °C, close to the historical average.

  • In general, the average temperature in Fort William at the beginning of September is 13.3 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 10.3 °C by the end of September.

    • Rain 🌧️

  • Fort William in September brings notable rainfall, with an average of 19 rainy days and a total precipitation of 116.6 mm.

    • More

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

Average dry days
10
Dry days
Average rainy days
19
Rainy days
Average snowy days
1
Snow days
Average temperatures
11°/6°
Temperatures
Average wind speed
13 km/h
Avg max wind
Average humidity
86 %
Avg humidity

Fort William Weather September

Move between months or click on a day
August
October
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Light rain shower
12°
2
Light rain shower
13°
3
Light rain shower
11°
4
Light rain shower
11°
5
Mist
13°
6
Mist
16°
7
Overcast
17°
8
Light rain shower
14°
9
Light rain
12°
10
Light rain shower
11°
11
Light snow showers
8°
12
Patchy rain possible
13°
13
Mist
14°
14
Overcast
15°
15
Light rain shower
13°
16
Patchy rain possible
12°
17
Overcast
12°
18
Light rain shower
11°
19
Light rain shower
11°
20
Light rain shower
9°
21
Light rain shower
9°
22
Patchy rain possible
11°
23
Light rain shower
11°
24
Light rain shower
13°
25
Overcast
17°
26
Light sleet
10°
27
Light sleet
7°
28
Patchy rain possible
8°
29
Patchy rain possible
9°
30
Light rain
8°

Temperatures trend during September in Fort William

See the weather trend as well as the moving average line

September weather in Fort William day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Light rain shower
Light rain shower
 12° /7° 10.8 mm 2
2 Sept. Light rain shower
Light rain shower
 13° /8° 5.3 mm 2
3 Sept. Light rain shower
Light rain shower
 11° /7° 5.9 mm 2
4 Sept. Light rain shower
Light rain shower
 11° /6° 3.9 mm 2
5 Sept. Mist
Mist
 13° /7° 1.3 mm 3
6 Sept. Mist
Mist
 16° /9° 4.2 mm 3
7 Sept. Overcast
Overcast
 17° /9° 7.1 mm 3
8 Sept. Light rain shower
Light rain shower
 14° /7° 5.2 mm 3
9 Sept. Light rain
Light rain
 12° /6° 3.5 mm 2
10 Sept. Light rain shower
Light rain shower
 11° /6° 9.2 mm 2
11 Sept. Light snow showers
Light snow showers
 8° /4° 6.2 mm 2
12 Sept. Patchy rain possible
Patchy rain possible
 13° /8° 10.5 mm 1.7
13 Sept. Mist
Mist
 14° /8° 0.6 mm 2.9
14 Sept. Overcast
Overcast
 15° /8° 1.5 mm 0.2
15 Sept. Light rain shower
Light rain shower
 13° /9° 17.1 mm 3
16 Sept. Patchy rain possible
Patchy rain possible
 12° /5° 0.7 mm 4
17 Sept. Overcast
Overcast
 12° /4° 0.1 mm 3
18 Sept. Light rain shower
Light rain shower
 11° /8° 17.5 mm 3
19 Sept. Light rain shower
Light rain shower
 11° /7° 10.1 mm 3
20 Sept. Light rain shower
Light rain shower
 9° /4° 8.4 mm 2
21 Sept. Light rain shower
Light rain shower
 9° /4° 4.7 mm 2
22 Sept. Patchy rain possible
Patchy rain possible
 11° /5° 1.3 mm 3
23 Sept. Light rain shower
Light rain shower
 11° /7° 10.2 mm 3
24 Sept. Light rain shower
Light rain shower
 13° /6° 28.4 mm 4
25 Sept. Overcast
Overcast
 17° /6° 0 mm 4
26 Sept. Light sleet
Light sleet
 10° /3° 0.3 mm 3
27 Sept. Light sleet
Light sleet
 7° /3° 11 mm 2
28 Sept. Patchy rain possible
Patchy rain possible
 8° /3° 0.5 mm 2
29 Sept. Patchy rain possible
Patchy rain possible
 9° /5° 0.3 mm 2
30 Sept. Light rain
Light rain
 8° /5° 5.7 mm 2
Next
Important Notice
Our weather forecast for Fort William in September 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 Fort William forecast closer to your planned date for the most up-to-date weather information.
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Fort William in September - FAQ

What are the expected maximum and minimum temperatures in Fort William during September?
During September, expect a variety of temperatures with highs around 11° and lows near 6°, suitable for diverse activities and preferences.

How much rainfall should be expected in Fort William during September?
Significant rainfall exceeding 116.6 mm is expected in Fort William during September, occurring over more than 19 days. Preparing for wet conditions is recommended in your planning.

Will it snow in Fort William in September 2026?
Fort William typically sees 6.6 cm of snowfall during September.

What are the typical wind conditions in Fort William during September?
The average wind speed in Fort William during September is 13 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Fort William

Explore the daily rainfall trends and prepare for Fort Williams September weather 💧
Typically, Fort William has 19 rainy days in September with a total of 116.6 mm of rainfall.

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Location coordinates Where is Fort William?

Get accurate weather forecasts for Fort William, located at latitude 56.816 and longitude -5.112. Stay updated with localized weather information tailored for Fort William.

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