Maryland
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Maryland Weather in September

September in Maryland averages 29°C (84°F) during the day and 24°C (75°F) at night. Quite a bit of rainfall is typical this month, with around 209 mm (8.2 in) on average. An umbrella is a good idea.

Rainfall in Maryland in September

Historically, September sees about 13 days of rain, with a monthly average of 209 mm (8.2 in). The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.

Temperature in Maryland in September

In September, Maryland gets high temperatures, with highs of 29°C (84°F). Nights cool to around 24°C (75°F). Overall, the month follows a fairly predictable daily temperature pattern. Nights are warm at 24°C (75°F). It's worth making sure your accommodation has decent ventilation or air conditioning.

Sunshine in Maryland in September

The area enjoys a moderate level of sunlight, with around 116 hours. It's a good balance between sunny and cloudy days.

Our weather planner can help you find worldwide destinations with pleasant weather during this period. August typically offers the best weather for Maryland.

Maryland Temperature in September

Min Temperature
24°C (75°F)
Max Temperature
29°C (84°F)
Chance of Rain
43%
Precipitation
209 mm (8.2 in)
Rainy days
13 days
Humidity
86% *
Sunshine
116 hours *
Percentage Sunshine
*
* Data from: Lagos, Nigeria (13 KM, 8 Miles).

Maryland Weather by Month

Pick a month to see the average temperature, rainfall and sunshine in Maryland - and find the best time to visit.

Historical weather records for Maryland in September

Browse day-by-day weather records for Maryland spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.

Maryland historical weather extremes in September

Based on weather observations in Maryland between 2006 and 2026, these are the recorded extremes during September.

  • On September 24, 2019, temperatures climbed to 34°C (93°F), marking the warmest September day on record.
  • The coldest September day was on September 28, 2022, with a maximum of 25°C (77°F).
  • Maryland registered its coldest September night on September 11, 2023, with temperatures dropping to 13°C (55°F).

Best Places in Nigeria in September

Find out more about the weather in Nigeria and which places have the best travel conditions in this month. See all of Nigeria 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 Maryland 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). Also bring a poncho, it will rain a lot! Waterproof everything you can. Sunglasses could come in handy during the sunnier parts of your trip.

What To Do in Maryland in September

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

  • Swimming
    7/10
  • Cycling
    7/10
  • Walking
    7/10
  • Camping
    6/10
  • Outdoor sports
    7/10

Maryland 3-Day Forecast

More climate data for Maryland

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.