Weather in Baltimore: Climate, Seasons, and Average Monthly Temperature

Baltimore is in the mid-Atlantic region of the East Coast and therefore experiences all four seasons. Extreme weather here is rare.

Summer is quite warm and humid; average highs range from 80 degrees Fahrenheit to 89 degrees Fahrenheit, though temperatures in the 90s are not unheard of.

In the winter, the city sees average temperatures between 29 degrees Fahrenheit and 55 degrees Fahrenheit. The sun is often shining, and while snow is possible, it is not guaranteed. When it does snow, no more than a few inches stick to the ground.

Spring and fall are the most mild, with temperatures ranging from 48 degrees Fahrenheit to 76 degrees Fahrenheit.

Due to its predictable and most moderate climate, the city is a popular tourist destination throughout most of the year. Here’s what you need to know when planning your trip to Baltimore so you know when to go and what to pack.

Fast Climate Facts

• Hottest Month: July (89 F)
• Coldest Month: January (29 F)
• Wettest Month: July (4.06 inches)
• Windiest Month: March (8 mph)
• Most Humid Month: September (71 percent)

Spring in Baltimore

Spring in Baltimore is extremely pleasant and one of the best times to visit. Temperatures are mild, there is plenty of sunshine, and flowers are beginning to bloom. Baseball season is just beginning, and there are several outdoor festivals. There may be a few rainy days.

What to pack: Layers are useful in spring since it might get warmer or cooler throughout the day and evening. Jeans and light trousers, T-shirts, sweatshirts, and long-sleeve button downs are useful. A raincoat or other light jacket is good to have on hand, as are sunglasses.

Average Temperatures by Month:

March: High: 54 degrees F; Low: 39 degrees F

April: High: 65 degrees F; Low: 48 degrees F

May: High: 75 degrees F; Low: 57 degrees F

Summer in Baltimore

Be prepared to sweat: June to August is generally hot and humid in Baltimore (think 75 percent humidity). The sunny weather brings more tourists, and festivals and boat rides around the harbor are popular. It's still baseball season, and the city is especially crowded on game days. Expect plenty of free outdoor music concerts throughout the summer.

What to pack: You’ll want shorts, T-shirts, and tank tops for the sticky heat. Sunglasses, sunscreen, and hats will also prove useful. Rain can still occur, so check the forecast and see if you need rain gear.

Average Temperatures by Month:

June: High: 85 degrees F; Low: 67 degrees F

July: High: 89 degrees F; Low: 73 degrees F

August: High: 87 degrees F; Low: 71 degrees F

Fall in Baltimore

Autumn is a beautiful time to visit Baltimore thanks to changing leaves, cooler temperatures, and less humidity. While days are getting shorter, there’s still plenty of sunshine. As baseball season winds down, football season begins and game days will bring out the crowds.

What to pack: Jeans, light pants, button downs, and T-shirts can be layered with a jacket. If you’re there in late fall, you’ll probably want a sweater and maybe a heavier jacket and scarf. Sunglasses are still a good idea, and if rain is in the forecast, bring a raincoat or umbrella.

Average Temperatures by Month:

September: High: 80 degrees F; Low: 64 degrees F

October: High: 68 degrees F; Low: 52 degrees F

November: High: 58 degrees F; Low: 43 F

Winter in Baltimore

Winter gets pretty chilly—especially at night. The days, while cold and short, can still be sunny. Because everyone is spending less time outdoors, museums and indoor attractions tend to be more crowded, particularly around the holidays. The Christmas season brings markets and light shows, while January and February promises fewer crowds and better deals on hotels and flights. Be prepared for possible snow and ice.

What to pack: Warm pants, sweaters, coats, hats, gloves, and scarves should all be in your suitcase. If it has snowed recently or if snow is in the forecast, bring warm, waterproof boots.

Average Temperatures by Month:

December: High: 46 degrees F; Low: 33 degrees F

January: High: 42 degrees F; Low: 29 degrees F

February: High: 46 degrees F; Low: 31 degrees F