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Stevenage
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United Kingdom weather

Weather in Stevenage for September 2026

Your guide to Stevenage weather in September - trends and predictions

    Temperatures

  • Until now, September 2026 in Stevenage is slightly cooler than the historical average by 1.7 °C.

  • Expect cooler weather in the next days in Stevenage with the forecast suggesting a temperature of 20 °C, lower than the historical average.

  • In general, the average temperature in Stevenage at the beginning of September is 22.6 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 17.7 °C by the end of September.

    • Rain 🌧️

  • Stevenage experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 66.1 mm.

    • More

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

Average dry days
9
Dry days
Average rainy days
21
Rainy days
Average snowy days
0
Snow days
Average temperatures
19°/12°
Temperatures
Average wind speed
22 km/h
Avg max wind
Average humidity
72 %
Avg humidity

Stevenage Weather September

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

Temperatures trend during September in Stevenage

See the weather trend as well as the moving average line

September weather in Stevenage 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
 22° /12° 2 mm 5
2 Sept. Mist
Mist
 21° /13° 1.5 mm 4
3 Sept. Overcast
Overcast
 22° /14° 2.6 mm 4
4 Sept. Sunny
Sunny
 21° /12° 5.1 mm 4
5 Sept. Cloudy
Cloudy
 22° /12° 1.8 mm 5
6 Sept. Overcast
Overcast
 25° /15° 0.4 mm 5
7 Sept. Sunny
Sunny
 25° /15° 1.6 mm 5
8 Sept. Partly cloudy
Partly cloudy
 21° /14° 7 mm 5
9 Sept. Overcast
Overcast
 21° /12° 0 mm 5
10 Sept. Light rain shower
Light rain shower
 22° /12° 2.1 mm 4
11 Sept. Cloudy
Cloudy
 19° /11° 0.9 mm 4
12 Sept. Overcast
Overcast
 23° /12° 0.5 mm 4.2
13 Sept. Patchy rain possible
Patchy rain possible
 21° /17° 3.2 mm 3.4
14 Sept. Sunny
Sunny
 24° /15° 0 mm 3.9
15 Sept. Sunny
Sunny
 25° /13° 0.2 mm 5
16 Sept. Sunny
Sunny
 17° /10° 0 mm 5
17 Sept. Overcast
Overcast
 16° /10° 0 mm 4
18 Sept. Overcast
Overcast
 19° /11° 0 mm 4
19 Sept. Patchy rain possible
Patchy rain possible
 17° /12° 2.7 mm 5
20 Sept. Overcast
Overcast
 17° /10° 0.8 mm 4
21 Sept. Light rain shower
Light rain shower
 17° /12° 8.7 mm 5
22 Sept. Overcast
Overcast
 19° /11° 0 mm 5
23 Sept. Overcast
Overcast
 22° /14° 0 mm 6
24 Sept. Overcast
Overcast
 23° /15° 0 mm 6
25 Sept. Overcast
Overcast
 18° /10° 1.7 mm 4
26 Sept. Thundery outbreaks possible
Thundery outbreaks possible
 18° /10° 2.2 mm 4
27 Sept. Patchy rain possible
Patchy rain possible
 16° /9° 2.5 mm 4
28 Sept. Overcast
Overcast
 16° /9° 0 mm 4
29 Sept. Patchy rain possible
Patchy rain possible
 16° /8° 1.1 mm 4
30 Sept. Cloudy
Cloudy
 17° /9° 6.3 mm 4
Next
Important Notice
Our weather forecast for Stevenage 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 Stevenage forecast closer to your planned date for the most up-to-date weather information.
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Stevenage in September - FAQ

What are the expected maximum and minimum temperatures in Stevenage during September?
Enjoy moderate daytime temperatures of up to 19° and cooler nights around 12°. Ideal for a range of outdoor activities, from hiking to city tours.

How much rainfall should be expected in Stevenage during September?
Moderate rainfall is anticipated in Stevenage during September, with a total of 66.1 mm spread over approximately 21 days. Considering plans for rainy days is advisable.

What are the typical wind conditions in Stevenage during September?
The average wind speed in Stevenage during September is 22 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Stevenage

Explore the daily rainfall trends and prepare for Stevenages September weather 💧
Typically, Stevenage has 21 rainy days in September with a total of 66.1 mm of rainfall.

UV exposure in Stevenage during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️

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Location coordinates Where is Stevenage?

Get accurate weather forecasts for Stevenage, located at latitude 51.902 and longitude -0.203. Stay updated with localized weather information tailored for Stevenage.

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