First Alert Forecast: A 36-Hour Temperature Whiplash, From Mild Rain to Frost

A fast swing in weather is on the way

The next day and a half will deliver a classic case of “temperature whiplash,” with conditions changing quickly from mild and damp to sharply colder. Friday starts out unusually warm for the time of day, but a strengthening breeze and an incoming colder air mass will flip the script by evening. By Saturday morning, some areas could wake up to frost, bright sun, and a wind chill that feels more like the 20s.

This kind of rapid change can catch people off guard because it compresses multiple seasons into a short window: springlike warmth early Friday, a breezy and cooler afternoon, and then a cold snap overnight into Saturday. The good news is that the chill is not expected to linger for long. By Sunday, temperatures moderate again, and early next week looks warmer overall, with highs climbing back toward 80 and overnight lows trending upward.

Friday: Clouds increase, scattered showers develop

Friday will turn cloudy as the day goes on, and scattered rain showers are expected to develop. The rain chance is 60%, which suggests many locations will see at least some light rain, though not necessarily a steady all-day soak.

Temperatures will be mild early, starting in the mid 60s. The warmest part of the day arrives unusually early: readings are expected to peak during the mid-morning, topping out around 71. After that, temperatures will begin falling through the afternoon as the breeze increases again. Even if the rain is light, the combination of clouds, wind, and falling temperatures can make the afternoon feel noticeably cooler than the morning.

• Morning: Increasing clouds and mild. Low around 65.
• Afternoon: Mostly cloudy with a few light rain showers. Turning breezy and cooler. Temperatures fall from a mid-morning high near 71 back into the 50s and low 60s by late afternoon. Rain chance 60%.

In practical terms, Friday is a day when timing matters. A short trip outside in the morning may feel comfortable in light layers, while later in the day the same outfit could feel inadequate as the wind picks up and temperatures drop. If you have outdoor plans, expect the most comfortable window to be earlier rather than later, and keep rain gear handy given the scattered showers.

Friday evening: Colder air takes over

Colder weather will take over Friday evening. The forecast calls for conditions to turn even colder while remaining breezy, with temperatures falling through the 40s. That’s a sharp change from the mid 60s at the start of the day and underscores why this stretch is being described as “whiplash.”

• Evening: Turning even colder. Remaining breezy, with temperatures falling through the 40s.

With the wind staying up into the evening, it may feel colder than the thermometer suggests. Anyone heading out Friday night should be prepared for a much different feel compared with earlier in the day, especially if they were out during the mild morning hours.

Saturday morning: Frost possible, wind chill in the 20s

By Saturday morning, the pattern shifts fully into cold and clear. The forecast notes frost in some areas, along with sunny skies and cold air. The low is expected to be around 36, and the wind chill could dip into the 20s. Even where temperatures hover just above freezing, the combination of clear skies and a light breeze can make the early hours feel quite harsh.

• Morning: Frost in some areas. Sunny and cold with a wind chill in the 20s. Low around 36.

If you are sensitive to cold or have early morning plans, Saturday’s start will likely be the most wintry-feeling period in this forecast cycle. Frost potential also means it’s worth thinking about plants or other items that might be affected by a brief cold snap, particularly in spots that tend to cool quickly overnight.

Saturday afternoon and evening: Sunshine, still chilly

Despite the cold start, Saturday will be sunny. The afternoon is expected to be chilly but not as harsh as the morning, with a high near 60. A light northeast breeze will continue, and the forecast highlights that the weather will feel notably cooler in the shade. That detail matters on sunny days following a cold front: direct sun can feel pleasant, but shaded areas can feel much colder, especially with a breeze.

• Afternoon: Sunny and chilly. Light northeast breeze continues. High around 60; noticeably cooler in the shade.
• Evening: Clear and chilly, in the 50s, then the 40s.

Saturday evening stays clear, with temperatures in the 50s early, then dropping into the 40s. After the sharp plunge from Friday to Saturday morning, the rest of Saturday is more of a steady, cool day rather than another dramatic swing.

Sunday: Mostly sunny and milder

Sunday brings a rebound. The forecast calls for mostly sunny skies and milder temperatures, with a high around 72. A south wind develops at 10 to 15 mph, a sign that warmer air is beginning to return. Compared with Saturday, the difference should be noticeable, particularly by afternoon.

• Afternoon: Mostly sunny and milder. High around 72. South wind developing 10–15 mph.
• Evening: Milder than previous evenings with temperatures in the 50s.

Sunday evening also stays milder than the previous nights, with temperatures in the 50s. After the frost potential Saturday morning, this is the start of a more springlike nighttime trend as well.

Early next week: Warmer weather returns

Warmer weather is expected to return starting Monday. The forecast calls for a low around 57 and a high near 80, a significant jump from the chilly Saturday and even a step up from Sunday’s milder afternoon. This marks the beginning of a warmer stretch that continues into Tuesday.

• Monday: Warmer. Low around 57, high around 80.

Tuesday looks similar to Monday, though with a few more clouds. There is also a 20% shower chance, indicating that while most of the day may stay dry, a brief shower is possible.

• Tuesday: Similar warmth, more clouds, and a 20% shower chance.

Midweek: More clouds and periodic shower chances, still warm

Wednesday and Thursday look unsettled at times, with more clouds and the chance for showers. Even with the added cloud cover and occasional rain chances, the forecast emphasizes that it will stay abnormally warm. Overnight lows are expected to be in the 60s, with highs in the low 80s.

• Wednesday–Thursday: Unsettled at times with more clouds and shower chances. Abnormally warm: lows in the 60s, highs in the low 80s.

That combination—warmer nights and low-80s afternoons—can make the overall feel more humid and summerlike compared with the crisp air that arrives for Saturday morning. While the forecast does not specify rainfall totals or storm intensity, it does point to a pattern where clouds and showers become more common again as the week goes on.

Planning tips for a rapid-change forecast

With temperatures rising and falling quickly, the most important takeaway is to plan around timing. Friday’s warmth is front-loaded into the morning, followed by a breezier, cooler afternoon and a cold evening. Saturday starts cold enough for frost in some areas, but sunshine helps temperatures recover to around 60 by afternoon. Sunday and Monday then build back into a warmer pattern.

• Dress in layers Friday: Mild early, cooler and breezier later, and much colder by evening.
• Expect a cold start Saturday: Frost is possible in some areas, and wind chill may be in the 20s.
• Look for the rebound Sunday into Monday: Mostly sunny Sunday, then warmer conditions with Monday near 80.
• Keep an eye on shower chances: Scattered showers Friday (60%), a small chance Tuesday (20%), and more unsettled periods midweek.

Staying informed

Forecasts like this—where the temperature trend reverses quickly and conditions change within hours—reward frequent check-ins. If you rely on weather alerts and customized messages about conditions and forecasts, you can use a dedicated weather app that provides life-saving alerts and videos detailing upcoming weather events, and you can also share weather pictures or videos through the available submission option.