Forecasts for the Bay Area's weather in September are predicted by meteorologists

September Weather Forecast: Cooling Trend and Potential Precipitation Across Regions

September is expected to bring a mix of weather conditions across the region, with daytime temperatures varying significantly depending on the location.

According to meteorological predictions, average air temperatures for September will range between 7-11°C. In the north, daytime temperatures will initially be warmer, reaching between +15 to +20°C, but will drop to +7 to +12°C by the end of the month. Cities such as Kalix in northern Sweden, for instance, will experience a drop from early September's warmer temperatures (+12 to +17°C) to +5 to +10°C by late September.

In other areas, daytime maximum temperatures will be higher, reaching between +18 to +23°C. By the end of the third decade, the rest of the territory will also see nighttime temperatures drop to 0 +5°C.

Throughout September, intense precipitation is possible in the second and fourth five-day periods, and in the middle of the month in the western, central, and southern regions. The strongest rains are expected around September 3-4, with the passage of a cyclone. Fortunately, the total monthly precipitation for September is expected to be within the climatic norm, ranging between 30-60 mm.

September is traditionally characterized by frequent fogs, and this year is no exception. Thunderstorms are also possible at the beginning of the month.

It's worth noting that the temperatures are 1-2°C above normal climate values. From September 15 to 20, western, central, and southern regions will experience a noticeable daytime cooling to +5 to +10°C. In the west and north, nighttime temperatures may drop to 0 +5°C in the first ten days.

Frost as a dangerous weather phenomenon is possible until September 5. After this period, the region can generally expect cooler temperatures, with most areas experiencing nighttime temperatures of 0 +5°C by the second and third decades of September.

In summary, September is expected to bring a cooling trend and potential precipitation across the regions, with temperatures varying significantly depending on the location. It's advisable to stay updated with local weather forecasts to prepare for the changing weather conditions.