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Observations by Gary Fewless for Green Bay WI (Lat.N 44.51° Long. W 88.02° ), except as noted. For flowers lacking conspicuous petals or sepals I define "anthesis" as release of pollen by mature anthers.

September 2009chickory, bur oak, compass plant

Mouse-over the photo for the identity of the subject

Sep 30 The Green Bay Weather Service station at the airport reported 30° F this morning, but in Allouez we were considerably warmer and I saw no frost this morning. Laona, about 80 miles NNW of Green Bay, reported 30° and Hiles about 95 miles NNW reported 26° F.
Sep 29

Fraxinus pennsylvanica (Green Ash) has dropped a large number of ripe fruits on the UW-Green Bay campus.

The fruits of Viburnum lentago (nannyberry) are ripe in the Green Bay area.

Sep 28 There was an amazing sunset today from UW-Green Bay. It lasted only a few minutes, but caught the attention of just about everyone who was outside at the time (about 6:35-6:40 pm CDT). The color of the photo has not been altered.
Sep 27 With the shortage of rain during the last month the water level in some northern Wisconsin lakes have fallen dramatically, as here in MarinetteCounty.
Sep 26

The very dry conditions persist over a large portion of Wisconsin. Rhinelander in Oneida County has had only 0.06 inches of rain in the last 28 days. Wausau has received only 0.08 inches during this time period, and Marquette in upper Michigan has received only 0.31 inches.

Sep 24 There is a great deal of variation among sites in northern Wisconsin , in terms of the degree of Fall color in the Forest. Here are a couple of photos from Forest County today. In the interior of forest, there is still a lot of green. On edges and locally you can find some fine displays of color already. Photo1 photo2 photo3. I prefer the appearance when some leaves are still green for contrast--under those criteria I think the next weekend will be very good in the area of Forest, Florence and northern Marinette and Oconto Counties. If you prefer a complete color change of all the leaves, then it will be another week or two, and of course you can adjust a bit by choosing different locations.
Sep 22 In the last 3 days (Sep 20,21,22) Green Bay has received 0.71 inches of rain and that is the total in the last 4 weeks, about 2 inches below the average.
Sep 19 Today is the 21st consecutive day with no rain in Green Bay. Some tree and shrub leaves have yellowed or browned due to the drought, or perhaps just speeded up the process of Autumn leaf senescence. Similar conditions exist in much of northeastern Wisconsin. Rhinelander, about 105 miles NW of Green Bay has had only 0.01 inches of rain in the last 21 days.
Sep 14

Green Bay and most of northeastern Wisconsin has had no rain for 16 days and counting. Temperatures have been unseasonably warm also--the highs have been 78° F or higher for the last 10 days and in the 80's for the last 5 days. Longterm avg daily high for Sep 14 is 71° F.

Sept. 1 2 3 4 5 6 7 8 9 10 11 12 13 14
High °F 72 75 76 78 78 79 79 79 79 82 81 82 84 85

Leaf color change is obvious in the Green Bay area, as here on UW-Green Bay campus. Trees in the photo are mostly Fraxinus pennsylvanica (green ash).

Sep 10 I've heard several reports of Coyotes being very vocal in northeastern Wisconsin recently. Many people really enjoy the highly variable calls.
Sep 9 Some reports of conspicuous movement of flocks of song birds in northeastern Wisconsin.
Sep 7

Red maple (Acer rubrum) is always one of the first trees to turn color in the Fall, but so far only stressed individuals have bright red leaves as here in Forest County.

High temperatures of 78° F or 79° every day for the last four days and lows in upper 40's are about seasonal for Green Bay. No rain for the last 9 days and only 0.75 inches in the last 17 days.

Sep 6 Another sign of the advancing season is the yellowing leaves of common milkweed (Asclepias syriaca), shown here in Marinette County, Wisconsin.
Sep 4 Both pollen and mold spore counts are high today in Green Bay. Many people report symptoms from sneezing and tearing eyes to congestion and coughing.
Sep 1

There are subtle hints that Fall is approaching, as in the few red leaves on these staghorn sumacs (Rhus typhina) on UW-Green Bay.

A more definite sign of Fall is the arrival of frost this morning in Goodman, Marinette County and other nearby areas.

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Last updated on May 20, 2015