Brandon Marshall - ABC 6 Meteorologist, 1320 Salem Road SW, Rochester, MN (2025)

09/05/2025

9:44 AM | FRI. SEP. 5 | - **COOL WEEKEND, SLIGHT RAIN CHANCES**

A dynamic storm system will meander across the Upper Midwest and Great Lakes through the weekend leading to cooler than average temperatures and the chance of a few showers.

FRIDAY: An afternoon shower or sprinkles are possible. Partly sunny. High of 58°. Breezy. A west wind 15-30 mph.

FRIDAY NIGHT: An evening shower, sprinkles possible. Partly cloudy and cool. Low of 43. A west wind 5-15 mph, but becoming lighter overnight.

SATURDAY: Partly sunny. An afternoon shower possible. High of 60°. Breezy. A west wind 10-20 mph.

SATURDAY NIGHT: Becoming mostly clear. Chilly. Low of 40°. A light west wind 5-10 mph.

SUNDAY: Mostly sunny. Continued cool. High of 63°. A light northwest wind 5-10 mph.

09/04/2025

10:10 AM | THU. SEP. 4 | - **THURSDAY RAIN, SMOKE & WIND**

SMOKE, HAZY SKIES

A southwest-to-west wind will bring wildfire smoke into the region from the Central Plains during middle to late afternoon hours. This smoke could make for some hazy skies with some possibly mixing to the surface. A cold front passing through during the evening hours will scour away the smoke as the front pushes east.

EVENING RAIN LIKELY

Showers will be possible by late afternoon (after 4:00 PM) with rain becoming more likely during the evening (after 6:00 PM) hours. This will be quick-hitting and fast-moving front with the bulk of the rain ending before midnight although a spotty shower may linger into the overnight. A t-storm is also possible, but the severe threat is low. Most communities will likely see less than 0.25", however higher amounts are possible if and where any t-storms develop.

GUSTY WIND

The wind will increase behind the front by late evening and through the overnight into Friday. Wind gusts of 40-50 mph are possible. The gustier winds will come down by Friday morning, but still expect a brisk breeze through much of Friday.

09/04/2025

9:35 AM | THU. SEP. 4 | - **THURSDAY'S LOW TEMPS**

It was a *CHILLY* start the day as many communities were in the lower 40s with a few upper 30s! These numbers are about 10° to 15° BELOW average for early September and the coldest temperatures for many since the middle of May! 🥶

We'll continue to see our overnight and morning lows in the 40s (some possible 30s) all the way into Monday.

09/03/2025

11:45 AM | WED. SEP. 3 | - **SEPTEMBER SNOW**

Fall air has arrived! It's a sign that we're getting a bit closer to the SNOW season! ❄️

In fact, we're about 3 weeks away from the earliest measurable snowfall (0.1") on record for a few of the big cities across Southeast Minnesota and North Iowa.

From September 24th through the 26th, 1942, an early season winter storm moved through the Northern Plains, Upper Mississippi River Valley, and Great Lakes, dropping measurable snow as it passed by.

In many places across Minnesota, Iowa, Wisconsin, and northern Illinois, this was their earliest measurable snow on record.

The highest snowfall total was 9.0" at Sauk Centre, Minnesota.

**Snowfall records date back to the late 1800s in Mason City and early 1930s for Rochester, Austin and Albert Lea.

09/03/2025

9:20 AM | WED. SEP. 3 | - *DWINDLING DAYLIGHT HOURS**

Daylight hours will continue to dwindle away throughout September.

This significant shortening of days occurs because of Earth's axial tilt and its orbit around the sun, which results in the Northern Hemisphere receiving less direct sunlight as autumn approaches.

Expect approximately 80 minutes, or 1 hour and 20 minutes, of daylight lost from the beginning of the month to the end.

09/03/2025

8:58 AM | WED. SEP. 3 | - **AUGUST NUMBERS // SEPTEMBER PREVIEW**

AUGUST TEMPERATURES & RAINFALL

The numbers are in for the month of August. In Rochester, the month finished just a hair above normal for average temperature. The average high temperature was 77.5° which was 0.5° colder than the thirty-year climatological average of 78.0°. Meanwhile, the average low temperature was 59.0° which was 0.7° warmer than the thirty-year climatological average of 58.3°.

The month finished with 6.81″ of rain which was 2.69″ above the thirty-year climatological average of 4.12″. It was the seventh wettest August on record and wettest since 2007. There were two daily precipitation records broken - August 9th (3.06") and August 17th (1.17").

SEPTEMBER PREVIEW

The average high and low temperatures drop through the month. The average high goes from 76° on September 1st to 72° on September 15th to 66° by the end of the month whereas the average low temperature will go from 56° at the beginning to 45° by the end.

September also averages around 3.60″ of rainfall.

While typically no snow falls during September, measurable snow did fall in 1942 (0.3″ on September 26th) and 1961 (0.8″) on September 30th.

The month will lose approximately one hour and twenty-six minutes of daylight hours from beginning to end.

09/02/2025

9:57 AM | TUE. SEP. 2 | - **TUESDAY RAIN // DRAMATIC COOL DOWN**

Showers and a few t-storms will be possible around lunch time into the afternoon before a cold front arrives during the evening leading to another round of showers and t-storms.

Severe weather is not expected, but some healthy downpours are possible.

Showers will linger overnight into Wednesday morning with a few spotty showers and isolated thunder possible during the afternoon.

Behind the front, a dramatic cool down will lead to well below average temperatures for early September. Highs from Wednesday into the weekend will be in the 60s which is more typical of early October. Night and morning lows will be "chilly" in the 40s!

09/01/2025

10:39 AM | MON. SEP. 1 | - **MUCH COLDER MIDWEEK**

Enjoy the lingering summer warmth today and Tuesday (70s) as temperatures are expected to crash following the passing of a strong cold front late Tuesday night.

A trough of low pressure will dive south bringing Arctic air with it as it sets up over the Great Lakes region for the second half of the week. This trough will send a cold front through Tuesday night followed by a shot of much colder air.

We'll jump into fall really quickly with mid October-like temperatures as highs barely scrape the lower 60s from Wednesday through Saturday. Night lows will be "chilly" in the 40s. However, a brisk wind will make it feel colder especially by Thursday morning where a "wind chill" in the 30s will be likely!! 🥶

Temperatures will moderate Sunday and next Monday. It's looking like 70s return by the middle of next week.

08/31/2025

10:05 AM | SUN. AUG. 31 | - **MAJOR MIDWEEK COOLDOWN**

A strong upper—level trough will descend south into the region by the middle of the week as a Canadian polar airmass spills into the area sending temperatures well below average.

A cold front will accompany this cooler air with showers (a few t-storms) likely late in the day on Tuesday through Tuesday night into Wednesday.

Temperatures on Wednesday will be around the lower or middle 60s for highs. The coldest of the air will come on Thursday as temperatures will be in the 40s (some 30s possible) to start the day! Daytime highs may only get to 60°, with some staying in the 50s - which is 15-20° below average for early September.

Get those jackets and flannels to the front of the closet! 🙂👍

08/29/2025

9:24 AM | FRI. AUG. 29 | - **WEEKEND RAIN CHANCES // MILD TEMPERATURES**

A frontal boundary will waver across the area today and Saturday as a couple minor disturbances track through leading to chances for showers and t-storms. These will be widely scattered with several communities likely seeing nothing at all as widespread rain is not expected.

A few showers and t-storms are possible during the Friday afternoon and early to middle evening hours. Severe weather is not expected, but if any t-storms flare up they could put down some healthy downpours. A few of these could impact high school football games, but most will go on just fine.

Saturday will feature the same thing as Friday - a few scattered showers and t-storms will be possible with most staying dry as high pressure over the Great Lakes region begins to have influence on our weather as it nudges in drier air pushing the front further west and south where it will be on Sunday and Labor Day Monday with dry weather expected locally.

Temperatures will be fairly similar each day with highs hovering around the middle 70s and night lows in the middle or upper 50s. The humidity will be noticeable each day, but certainly not terrible for this time of year.

08/28/2025

10:05 AM | THU. AUG. 28 | - **UPCOMING RAIN CHANCES**

Model data continues to struggle with the overall weather pattern expected through the weekend into Labor Day in regards to chances for rain and possible t-storms.

There is agreement on a frontal boundary that will get hung up across the area on Friday as a minor disturbance passes through. Moisture will wraparound a mid-level high combined with converging winds and daytime instability leading to a few showers and t-storms popping up during the afternoon. A few may linger into the evening which could impact some high school football games. The severe threat is low.

The above features will move a bit further west on Saturday as a surface high pressure descends over the Great Lakes region. Lingering moisture and daytime instability may also be enough to pop a few showers and t-storms during the afternoon and evening. The severe threat is low.

The uncertainty comes in regarding Sunday and Labor Day on Monday. Another disturbance will move across the Dakotas, but will be limited in its progression to the east due to the stubborn surface high over the Great Lakes. The position of these features will be key in where any rain develops. Some data suggests any rain will be west across Southwest Minnesota, Northwest Iowa and the Dakotas while other data is a bit further east with the disturbance and location of the surface high with some rain sneaking into the area on both days. Hopefully on Friday there'll be more clarity.

Confidence in temperatures is much higher. Don't expect much of a range as highs will generally be around the lower or middle 70s from Friday through Monday with night lows in the 50s. There will be some humidity, but it won't be terrible.

08/28/2025

A Severe Thunderstorm Warning has been issued until Aug 27 8:30PM CDT for Fillmore, Olmsted, Winona County. Please seek shelter if you are in the warned area and tune in to ABC 6 News on-air or online for updates. http://bit.ly/1JcNwex?utm_medium=social&utm_source=facebook_Brandon_Marshall_-_ABC_6_Meteorologist
Get severe weather notifications to your phone. http://bit.ly/2jjAvcg?utm_medium=social&utm_source=facebook_Brandon_Marshall_-_ABC_6_Meteorologist

Brandon Marshall - ABC 6 Meteorologist

09/05/2025

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