Hartford microclimates

Where Hartford typically runs warmer and cooler than the city center this fall, from the afternoon through the night.

On a typical fall evening, Hartford spans about 3°F from its warmest area, about 9 miles southwest of the city center, to its coolest, about 9 miles east of the city center. Afternoons are more even, within about 2°F. Nights are more even, within about 2°F. Mornings are more even, within about 2°F.

Map

Typical fall evening in Hartford

Blue areas typically run cooler than Hartford overall at this time of day, amber and red areas warmer. The map is smoothed to show areas rather than single blocks.

Questions

About Hartford's microclimates

Why do neighborhoods differ?

A few things shape how warm or cool a spot runs. Elevation: on clear, still nights cool air drains downhill and pools in valleys and creek bottoms, so low ground can be several degrees colder than a nearby hillside. Water: lakes, rivers and the ocean warm and cool slowly, keeping afternoons cooler and nights milder near the shore. Pavement and buildings: roads, roofs and walls soak up heat all day and give it back after dark, so dense areas stay warm into the night. Parks and open ground: grass, trees and fields cool off quickly once the sun goes down.

When are the differences biggest?

On clear, calm nights. Without wind to mix the air or clouds to hold heat in, each neighborhood cools at its own pace, and low spots can end up far colder than the center. Breezy or cloudy weather evens things out, and sunny afternoons are usually the most uniform time of day.

What does the map show?

How much warmer or cooler each part of Hartford typically runs than the city as a whole at a given time of day this fall. Clear areas run close to typical; blue areas run cooler, amber and red areas warmer. The colors show typical differences, not today's temperatures.

How do I get a forecast for my part of Hartford?

Add your address in Forecast Bar for hour-by-hour forecasts, radar, rain alerts and severe weather warnings for exactly where you are, on iPhone, iPad, Apple Watch, Mac and Apple TV.

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The forecast for your part of Hartford

Forecast Bar puts hour-by-hour forecasts, radar, rain alerts and severe weather warnings for Hartford and every other place you care about on iPhone, iPad, Apple Watch, Mac and Apple TV.

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