Julian Weather in September

September in Julian typically sees daytime highs of 28°C (82°F) and nighttime lows of 14°C (57°F). Minimal rainfall is typical for this month.

Rainfall in Julian in September

This month experiences about 3 days of rain according to historical data, averaging 11 mm (0.4 in). The odd shower may pass through, but it usually doesn't amount to much. A largely dry month overall.

Temperature in Julian in September

September is a perfect month in Julian, with 28°C (82°F) during the day and 14°C (57°F) at night. This kind of day-to-night contrast is typical for this time of year. At 14°C (57°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.

Sunshine in Julian in September

The month enjoys around 253 hours of sunshine, creating mostly sunny days with good weather conditions.

If you favor pleasant temperatures and minimal rainfall, September is one of the best months to visit Julian.

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• January
• February
• March
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• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Julian's climate page.

Julian Temperature in September

Min Temperature 14°C (57°F)  

Max Temperature 28°C (82°F)  

Chance of Rain 10%  

Precipitation 11 mm (0.4 in)  

Rainy days 3 days  

Humidity 74% *  

Sunshine 253 hours *  

Percentage Sunshine 68% *  

* Data from: San Diego, the United States of America (66 KM, 41 Miles).

What to Wear in Julian 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. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.

What To Do in Julian in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

10/10

Cycling

8/10

Walking

8/10

Barbeque

10/10

Camping

10/10

Outdoor sports

8/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Julian's climate page.

More climate data for Julian

Temperature Rainfall Sunshine Humidity

See the full Julian climate overview or explore weather in the United States of America.