Warming Up to Summer Through Midweek

Temperatures to climb into the 80s inland as humidity increases across Connecticut

Apr. 13, 2026 at 8:05am

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A vast, atmospheric landscape painting in muted tones of gold, ochre, and soft blue, with a distant horizon line obscured by a warm, hazy glow, conveying the sublime scale and power of the natural world on a summer day.As summer-like warmth envelops Connecticut, the state's natural landscapes take on a hazy, sublime beauty that reflects the changing climate.New Haven Today

Temperatures are expected to warm up significantly across Connecticut this week, with inland areas seeing highs in the 80s by midweek as summer-like conditions take hold. The shoreline regions will see cooler temperatures in the 70s, but the entire state will experience an increase in humidity that could lead to scattered afternoon and evening thunderstorms.

Why it matters

This early summer warmup is a sign of the changing climate, with Connecticut seeing more frequent and intense heatwaves as global temperatures rise. The contrast between inland and coastal temperatures also highlights the moderating effect of the Long Island Sound on the state's weather patterns.

The details

After a cloudy start to the week, temperatures are forecast to steadily climb, with inland areas like Hartford reaching the low to mid 80s by Wednesday. The shoreline regions, especially east of New Haven, will see more moderate temperatures in the 70s due to the cooling influence of the Long Island Sound. Humidity levels will also increase through the week, leading to the possibility of scattered thunderstorms, particularly in the late afternoon and evening hours.

  • Early this morning: An isolated shower is possible, otherwise mostly cloudy with lows in the 40s.
  • Today: Lots of clouds at times with sunny breaks and an isolated shower too! Windy with highs in the upper 60s to middle 70s. Cooler at the shoreline east of Madison with only 50s in the SE CT.
  • Tomorrow: Partly sunny, warm with a touch of humidity. High near 80 inland. Cooler at the shoreline. A spotty shower or storm at night.
  • Wednesday: Some sun, warm and humid. Very summer-like. Highs 80-85 inland. Cooler at the shoreline. A scattered late-day shower or thunderstorm possible.
  • Thursday: Partly sunny, breezy, very warm and humid. Highs in the 80s inland. 70s along the shoreline. A few showers at night.

The players

Gil Simmons

A meteorologist and weather forecaster for WTNH, the local ABC affiliate in Connecticut.

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The takeaway

This early summer warmup is a reminder of the changing climate patterns in Connecticut, with more frequent and intense heatwaves becoming the new normal. While inland areas will see temperatures climb into the 80s, the moderating effect of the Long Island Sound will keep the shoreline regions cooler, highlighting the importance of coastal ecosystems in regulating local weather conditions.