Weather in Lillestrøm for September 2025
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Until now, September 2025 in Lillestrøm has been nearly identical to the historical average, with a temperature of 17.3 °C (showing only a slight deviation of -0.5 °C).
Expect cooler weather in the next days in Lillestrøm with the forecast suggesting a temperature of 14.2 °C, lower than the historical average.
In general, the average temperature in Lillestrøm at the beginning of September is 19.1 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 12.6 °C by the end of September.
The climate of Lillestrøm in September is notably wet, with an average of 14 rainy days, and a total of 88.7 mm of precipitation.
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Lillestrøm Weather September
Temperatures trend during September in Lillestrøm
September weather in Lillestrøm day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Cloudy | 19° /10° | 1.7 mm | 5 | |
| 2 Sept. | Cloudy | 17° /9° | 2.8 mm | 4 | |
| 3 Sept. |  Patchy rain possible | 16° /9° | 1.7 mm | 4 | |
| 4 Sept. | Light rain shower | 19° /11° | 4.7 mm | 5 | |
| 5 Sept. |  Sunny | 22° /12° | 0.7 mm | 5 | |
| 6 Sept. |  Overcast | 20° /11° | 1.3 mm | 5 | |
| 7 Sept. |  Mist | 21° /10° | 0.2 mm | 5 | |
| 8 Sept. | Patchy rain possible | 21° /11° | 0 mm | 5 | |
| 9 Sept. | Light rain shower | 18° /11° | 7.7 mm | 4 | |
| 10 Sept. | Light rain shower | 19° /10° | 3 mm | 4 | |
| 11 Sept. | Light rain shower | 16° /9° | 4.3 mm | 4 | |
| 12 Sept. | Mist | 14° /7° | 4.2 mm | 3 | |
| 13 Sept. |  Partly cloudy | 14° /5° | 1.2 mm | 4 | |
| 14 Sept. | Overcast | 13° /4° | 6.5 mm | 3 | |
| 15 Sept. | Fog | 15° /6° | 0 mm | 4 | |
| 16 Sept. |  Moderate rain | 15° /9° | 8.1 mm | 0.2 | |
| 17 Sept. | Sunny | 19° /8° | 0 mm | 0.6 | |
| 18 Sept. | Partly cloudy | 18° /8° | 0 mm | 0.5 | |
| 19 Sept. | Patchy rain possible | 18° /12° | 2.2 mm | 0.4 | |
| 20 Sept. | Sunny | 18° /9° | 0 mm | 4 | |
| 21 Sept. | Partly cloudy | 14° /4° | 0 mm | 3 | |
| 22 Sept. | Patchy rain possible | 8° /3° | 0.4 mm | 2 | |
| 23 Sept. | Sunny | 12° /4° | 0 mm | 3 | |
| 24 Sept. | Sunny | 12° /4° | 0 mm | 3 | |
| 25 Sept. | Sunny | 12° /2° | 0 mm | 3 | |
| 26 Sept. | Sunny | 13° /2° | 0 mm | 3 | |
| 27 Sept. | Partly cloudy | 14° /4° | 0.1 mm | 3 | |
| 28 Sept. | Sunny | 12° /2° | 0 mm | 3 | |
| 29 Sept. | Patchy rain possible | 12° /4° | 0.1 mm | 4 | |
| 30 Sept. | Patchy rain possible | 13° /3° | 0.2 mm | 4 | |
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Lillestrøm in September - FAQ
September rainfall patterns in Lillestrøm
UV exposure in Lillestrøm during September
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Where is Lillestrøm?Get accurate weather forecasts for Lillestrøm, located at latitude 59.956 and longitude 11.049. Stay updated with localized weather information tailored for Lillestrøm.