Boston · July
Run in the morning.
Comfortable average high of 83°F, dipping to 66°F at night. Expect 15 rain days — plan around the radar. Humidity rises with the sun — morning runs catch the driest, coolest window.
Avg high / low
83° / 66°F
Humidity
72%
Rain days
15/mo
Wind
11 mph
What July feels like in Boston
Sunrise
05:22
Mid-month average
Sunset
20:17
Mid-month average
Time-of-day breakdown
Morning
Coolest, driest air of the day. The window before sunrise is the most reliable comfortable hour.
Midday
Mild but UV and traffic peak. Workable if you don't mind shifting your pace.
Evening
Warm and runnable. Crowded routes but the air's typically calm.
What to wear running in Boston in July
The kit for July in Boston: shorts and a short-sleeve are the standard kit, a water-resistant cap or jacket on standby.
July vs the surrounding months
vs June
+7° avg high
+2 rain days
Boston in June →
July
83°F avg high
15 rain days
Best: morning
vs August
+1° avg high
+2 rain days
Boston in August →
Frequently Asked Questions
What is the best time of day to run in Boston in July?+
Morning. Humidity rises with the sun — morning runs catch the driest, coolest window.
What's the average temperature in Boston in July?+
Average high 83°F, average low 66°F.
How does July compare to surrounding months in Boston?+
Compared to June (avg high 76°F), July is warmer. Compared to August (avg high 82°F), July is warmer.
Does it rain often in Boston in July?+
Expect about 15 measurable rain days in July, on average.