Yosemite National Park is definitely worth a visit
Vast forests, blue lakes, towering sequoias, and majestic waterfalls hint at the beauty of Yosemite National Park—a true natural masterpiece.
Montgomery in September sees very high daytime temperatures of 31°C (88°F) and nighttime lows of 19°C (66°F). With just 74 mm (2.9 in) of rainfall on average, it's the driest month of the year.
Should you favor a climate that's both dry and comfortably warm, October and November typically offer the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Pick a month to see the average temperature, rainfall and sunshine in Montgomery - and find the best time to visit.
50-year average (1976-2025)
Based on our historical records, temperatures in Montgomery typically drop from around 32°C (90°F) at the start of September to approximately 29°C (84°F) by the end. Nights are pleasant, with lows typically ranging from 17°C (63°F) to 22°C (72°F).
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Browse day-by-day weather records for Montgomery spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
According to our 49 years of weather records for Montgomery, the following extremes were recorded between 1976 and 2025.
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in September →
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
Warm temperatures in September make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Rain gear is recommended, you can expect wet weather on multiple days. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Temperature Rainfall Sunshine Humidity
See the full Montgomery climate overview or explore weather in the United States of America.
Where to go in September - average daytime high across popular destinations.
Need travel inspiration? Check out our bucket list articles and be inspired.
Yosemite National Park is definitely worth a visit
Vast forests, blue lakes, towering sequoias, and majestic waterfalls hint at the beauty of Yosemite National Park—a true natural masterpiece.
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