July weather forecast
Columbia, MD

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A beautiful and scenic setting around the waterfront homes at Wilde Lake in Columbia, Maryland
A beautiful and scenic setting around the waterfront homes at Wilde Lake in Columbia, Maryland

Weather in July

July in Columbia, Maryland, is synonymous with peak summer. Adorned by bountiful sunshine, the city glimmers, as locals and tourists bask in the warm temperature. Despite the heat, the beauty and vitality of Columbia remains undeterred. Unsurprisingly, July catches attention with the highest temperature of 85.8°F (29.9°C), granting it the title of the hottest month. As the month concludes, anticipation of milder days fills the air.

Temperature

Columbia experiences its highest average temperatures in July, reaching a peak of 85.8°F (29.9°C) and a minimum of 68.9°F (20.5°C).

Heat index

The heat index in July is computed to be a very hot 95°F (35°C). Emphasize additional safety, risk of heat cramps and heat exhaustion is high. Continuous activity might result in heatstroke.
Heat index's context suggests values are appropriate for shady areas and slight breezes. A rise in the heat index by 15 Fahrenheit (8 Celsius) degrees may result from direct sunlight exposure.
Note: The heat index, also known as 'apparent temperature' or 'real feel', gives a temperature feeling by integrating air temperature and humidity. Factors encompassing physical activity, clothing, and metabolic differences have a role in shaping the individual's impression of temperature. Should you be directly under the sun, anticipate a possible increase in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Children often overlook the need for breaks and fluid intake. Thirst is a late-stage sign of dehydration - hence, it is necessary to stay hydrated, especially during extended periods of physical activities.
The primary way humans combat excessive warmth is by perspiring, letting sweat evaporate and cool the body. When the air holds a significant amount of moisture, the efficiency of the evaporation process is decreased, preventing the body from cooling down efficiently, leading to the sensation of overheating. Heat-related complications, like dehydration, can manifest if the body's heat gain exceeds its dissipation capacity.

Humidity

The months with the lowest humidity are April and July, with an average relative humidity of 72%.

Rainfall

In Columbia, in July, it is raining for 17.3 days, with typically 3.31" (84mm) of accumulated precipitation. In Columbia, during the entire year, the rain falls for 159.3 days and collects up to 30.31" (770mm) of precipitation.

Snowfall

April through October are months without snowfall.

Daylight

In July, the average length of the day is 14h and 37min.
On the first day of July, sunrise is at 5:45 am and sunset at 8:37 pm. On the last day of the month, sunrise is at 6:07 am and sunset at 8:20 pm EDT.

Sunshine

The month with the most sunshine is July, with an average of 10.8h of sunshine.

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The maximum UV index of 6 during July leads to these instructions:
Implement precautions and maintain sun safety methods. Avoidance of sunburn is demanded. During the period from 10 a.m. to 4 p.m., UV radiation is highest. Try to avoid direct sunlight during these hours. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.

Frequently asked questions

What month is the hottest?

Temperature records mark July as the warmest month, with highs averaging 85.8°F (29.9°C) and lows at 68.9°F (20.5°C).

How hot does it get in July?

In Columbia, 85.8°F (29.9°C) is the average high-temperature and 68.9°F (20.5°C) is the average low-temperature during July. The average heat index (a.k.a. 'feels like', 'real feel'), which combines air temperature and relative humidity, in July is computed to be 95°F (35°C).

What is the least humid month?

The months with the lowest humidity in Columbia, Maryland, are April and July, with an average relative humidity of 72%.

What is the average humidity in July?

In July, the average relative humidity is 72%.

How much does it rain in July?

In Columbia, during July, the rain falls for 17.3 days and regularly aggregates up to 3.31" (84mm) of precipitation.

When it does not snow?

In Columbia, snow does not fall in April through October.

How many hours of daylight does Columbia have in July?

In July, the average day length is 14h and 37min.

What time are sunrise and sunset in July?

On the first day of July, sunrise is at 5:45 am and sunset at 8:37 pm. On the last day of the month, sunrise is at 6:07 am and sunset at 8:20 pm EDT.

What month has the most sunshine?

With an average of 10.8h of sunshine, July has the most sunshine of the year.

How long on average sun shines in July?

In July, the average sunshine duration is 10.8h.

What are the months with the highest UV index?

May through August, with an average maximum UV index of 6, are months with the highest UV index.

What is the UV index intensity in July?

In Columbia, the average daily maximum UV index in July is 6. A UV Index reading of 6 to 7 represents a high health threat from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in July
Columbia, MD

Average temperature in July - Columbia, MD
  • Average high temperature in July: 85.8°F

The warmest month (with the highest average high temperature) is July (85.8°F).
The month with the lowest average high temperature is January (38.1°F).

  • Average low temperature in July: 68.9°F

The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).

Average pressure in July
Columbia, MD

Average pressure in July - Columbia, MD
  • Average pressure in July: 29.97"Hg

The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in July
Columbia, MD

Average wind speed in July - Columbia, MD
  • Average wind speed in July: 5.4mph

The windiest month (with the highest average wind speed) is March (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

Average humidity in July
Columbia, MD

Average humidity in July - Columbia, MD
  • Average humidity in July: 72%

The months with the highest relative humidity are May and October (77%).
The months with the lowest relative humidity are April and July (72%).

Average rainfall in July
Columbia, MD

Average rainfall in July - Columbia, MD
  • Average rainfall in July: 3.31"

The wettest month (with the highest rainfall) is August (4.06").
The driest month (with the least rainfall) is January (1.85").

Average rainfall days in July
Columbia, MD

Average rainfall days in July - Columbia, MD
  • Average rainfall days in July: 17.3 days

The month with the highest number of rainy days is May (18 days).
The month with the least rainy days is January (8.4 days).

Average snowfall in July
Columbia, MD

Average snowfall in July - Columbia, MD
  • Average snowfall in July: 0"

The month with the highest snowfall is March (3.03").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in July
Columbia, MD

Average snowfall days in July - Columbia, MD
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is February (4.6 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in July /
Average sunshine in July
Columbia, MD

Average daylight in July / Average sunshine in July - Columbia, MD
  • Average daylight in July: 14h and 4min

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in July: 10h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The months with the least sunshine are January and February (Average sunshine: 5h and 6min).

Average sunshine days in July
Columbia, MD

Average sunshine days in July - Columbia, MD
  • Average sunshine days in July: 11.1 days

The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is May (11 days).

Average UV index in July
Columbia, MD

Average UV index in July - Columbia, MD
  • Average UV index in July: 6

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in July
Columbia, MD

Average cloud cover in July - Columbia, MD
  • Average cloud cover in July: 29

The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 29).

Average visibility in July
Columbia, MD

Average visibility in July - Columbia, MD
  • Average visibility in July: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

Columbia, Maryland, USA

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