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.
Arnold Weather in September
September in Arnold brings high temperatures, with highs of 27°C (81°F) and nights dropping to 12°C (54°F). Rainfall is very low this month, averaging just 7.1 mm (0.3 in).
Rainfall in Arnold in September
You can expect rain on around 2 days based on historical patterns, with 7.1 mm (0.3 in) average for the month. Rain is scarce this month and when it does fall, it tends to be light. Unlikely to disrupt plans significantly.
Temperature in Arnold in September
September is a good time to be in Arnold. Days are excellent, reaching 27°C (81°F), with nights around 12°C (54°F). September is typically considered a summer month. The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. With overnight lows of 12°C (54°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.If you're a fan of comfortable temperatures and drier conditions, September is a great time to visit.
Arnold Temperature in September
Min Temperature
12°C (54°F)
Max Temperature
27°C (81°F)
Chance of Rain
7%
Precipitation
7.1 mm (0.3 in)
Rainy days
2 days
Arnold Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Arnold - and find the best time to visit.
Best Places in the United States of America in September
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
pleasant
tolerable
unpleasant
poor
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).
What to Wear in Arnold in September
Warm weather calls for comfortable, breathable clothing in September. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). Almost no rain is expected, so no need to bring rain gear.
What To Do in Arnold in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
-
Cycling8/10 -
Walking8/10 -
Camping10/10 -
Outdoor sports8/10
Arnold 3-Day Forecast
More climate data for Arnold
See the full Arnold climate overview or explore weather in the United States of America.
Popular in September
Where to go in September - average daytime high across popular destinations.
Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
Yosemite National Park is definitely worth a visit
The 10 most alternative cities in the United States
Discover the top 10 fun and alternative U.S. cities rich in art, culture, and adventure. From Portland's hippy charm to Sedona's stunning landscapes.
Sedona: Explore Majestic Red Rock Landscapes
A picturesque artists' town surrounded by red rocks and known for its spirituality, vortex energy, and stunning hikes like Cathedral Rock.
10 most idyllic villages to visit in the United States
Discover 10 idyllic villages in the USA, from California to Vermont. Explore their unique charm, rich history, stunning nature, and vibrant arts scenes.