Waltham Weather in July
July in Waltham brings high temperatures around 29°C (84°F) during the day, dropping to 17°C (63°F) at night, with quite a bit of rainfall expected, averaging around 100 mm (3.9 in) for the month.
Rainfall in Waltham in July
You can expect rain on around 12 days based on historical patterns, with 100 mm (3.9 in) average for the month. Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.
Temperature in Waltham in July
Waltham in July gets highs of 29°C (84°F) during the day and drops to 17°C (63°F) at night. This kind of day-to-night contrast is typical for this time of year. With lows of 17°C (63°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest. This month tends to be the warmest of the year. Light, comfortable clothing will serve you well.
Sunshine in Waltham in July
The city usually sees around 300 hours of sunlight, indicating many sunny days — a great month for sightseeing.
Wind Speed in Waltham in July
Wind speeds average 5 m/s (10 knots) during July. At this speed, gentle to moderate breezes make small trees sway and the wind creates whitecaps on water bodies. Daily variations range from moderate winds to stronger breezes, creating excellent conditions for sailing, kite flying and wind sports.
Average water temperature in July
The water temperature is 18°C (64°F). It's not warm, but most people find it perfectly fine for a swim once they're in.Should you favor a climate that's both dry and comfortably warm, May, August and September 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.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Waltham's climate page.
Waltham Temperature in July
Min Temperature
17°C (63°F)
Max Temperature
29°C (84°F)
Water Temperature
18°C (64°F) *
Chance of Rain
40%
Precipitation
100 mm (3.9 in)
Rainy days
12 days
Humidity
71% *
Windspeed
5 m/s (10 knots) *
Sunshine
300 hours *
Percentage Sunshine
65% *
Best Places in the United States of America in July
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 July →
perfect weather
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What to Wear in Waltham in July
Warm weather calls for comfortable, breathable clothing in July. 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). High rain levels are expected, so pack waterproof gear and an umbrella or poncho. With water temperatures around 18°C (64°F), the water is quite cold for swimming. You can skip the swimwear unless you're particularly tough. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.What To Do in Waltham in July
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Waltham's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Waltham climate overview or explore weather in the United States of America.
