The Old Farmer’s Almanac long-range weather outlook for September offers a region-by-region look at what the month ahead may bring across the United States. As a long-range outlook, the forecast describes broad regional patterns rather than exact day-to-day conditions. The Almanac divides the country into zones and outlines whether temperatures and precipitation are expected to trend above or below historical averages.
The publication says its long-range forecasts combine solar science, climatology and meteorology. Its method compares solar patterns and historical weather conditions with current solar activity, while also considering climate data and large-scale signals such as El Niño and La Niña to predict broader temperature and precipitation trends. Here’s a regional overview of what conditions are likely for September, according to the publication: September begins with showery and cool conditions through September 7, followed by a sunny but still cool period from September 8 to 11.
Rainy periods are expected before sunshine returns from September 12 to 19, while showers and cool conditions are forecast for the remainder of the month. The Almanac forecasts a temperature of 59 degrees, 2 degrees below average, with 5.5 inches of precipitation, around 2 inches above average. The Atlantic Corridor is expected to see scattered thunderstorms from September 1 to 12, with warm conditions giving way to cooler weather.
Scattered showers are forecast in the north from September 13 to 23, while the south remains sunny, before isolated showers and cool conditions affect the region during the final week. Precipitation is forecast at 3 inches, about 1 inch below average, while the temperature is expected to average 68 degrees, 1 degree below normal. September starts sunny and warm in the Appalachians before scattered showers bring cooler conditions from September 7 to 12.
From September 13 to 23, isolated showers are expected in the north while the south remains sunny, with cool temperatures turning warmer. Showers and cool weather follow from September 24 to 27, before the month ends with showers in the north, sunshine in the south and milder conditions. The region’s September temperature is forecast at 63 degrees, 2 degrees below average, with precipitation around 2 inches below average.
The Southeast outlook calls for sunny and mild conditions to open September. Thunderstorms are expected before sunshine returns from September 8 to 18, accompanied by cooler weather. Another sunny and mild stretch follows through September 24, with the month ending sunny as cool conditions turn warmer.
Extract — continue reading at the source.
