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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 2007

Sep 26 Here are more Fall colors from UW-Green Bay's Cofrin Arboretum.
Sep 25

This is another old field on the UWGreen Bay campus. The red at lower left is Cornus racemosa (gray dogwood), the yellowing trees are Fraxinus pennsylvanica (green ash) and the numerous whitish triangles in the foreground are the fruiting tops of Soldiago canadensis (Canada goldenrod).

Green Bay received 0.58 inches of rain today.

Sep 24 Green Bay's high temperature was 88° F today. Remarkably warm for this late in the month.
Sep 23 Here's a return to the staghorn sumac shown on Sep 20. Later in the Fall I'll make a series of photos of the leaf color change at this site.
Sep 22 Water levels in Green Bay are very low, exposing the lakebed. There are some very interesting sunsets at this time of year, as shown here across southern Green Bay toward the mouth of the Fox River from the UWGB shoreline along the Bay.
Sep 21

This is a great time of year for a walk to look at Fall colors, as shown here on UW-Green Bay's Cofrin Arboretum.

Green Bay received 0.46 inches of rain today.

Sep 20 Rhus typhina (staghorn sumac) are about half red now on the UWGB campus
Sep 18 The goldenrods and Asters are definitely past their peak, but there is still good fall color in the old fields in the Green Bay area.
Sep 16 Leaves in northeastern Wisconsin forests are still mostly green. Here is a photo from Suring Wisconsin in Oconto County and another from inside a sugar maple forest near Laona in Forest County. There are local spots with the some fall colors, but overall it is still mostly green. The freezing temperatures of yesterday morning will speed the process up.
Sep 15 The low temperature this morning was 32° F in Green Bay, and that is a record low for this date--previous low of 36° in 1964 and 1966. It is also the second earliest freeze date for Green Bay (the earliest was 32° on Sep 12, 1955). Rhinelander reported 24° F--previous record 29 in 1916 and 1964. Wisconsin Rapids (26), Marshfield (27), Antigo (27), Stevens Point (29), Wausau (30), Appleton (32) and Manitowoc (37) also reported new record lows in our area. All the above citys except Antigo and Manitowoc also reported record lowest high temperatures for this date.

Sep 14

This appears to be a very good year for acorn production for Quercus alba (white oak), at least on UWGB's Cofrin Arboretum. Word of mouth confirms that oaks in general are having very good acorn production this year in the Green Bay area.

The low temperature this morning was 36° F in Green Bay and even colder temperatures are predicted for tomorrow morning. Light snow was reported in Vilas County this morning.

Sep 13 The local tree leaves are mostly remaining green except for a few species, notably Fraxinus pennsylvanica (green ash) and the Populus species, especially Populus deltoides (cottonwood) and P. tremuloides (quaking aspen), all of which are turning yellow. As usual Rhus typhina (staghorn sumac) and Parthenocissus vitacea (Virginia creeper) and some less prosperous individuals of Acer rubrum (red maple) are now showing some red leaves.
Sep 10 Green Bay reached a high temperature of only 56° F today, a sharp contrast with the 92° of just 5 days earlier.
Sep 07 Green Bay received 1.43 inches of rain today, a new record rainfall for this date. The previous record was 1.21 inches in 1894.
Sep 05 Promptly upon my return from vacation, Green Bay records a high temperature of 92° F--a record for this date, after a high temperature of 89 yesterday. The plants in the Green Bay area have remained relatively healthy in spite of the hot temperatures in July and August and a long dry period (see Aug 11).

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Last updated on May 20, 2015