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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.

October 2007

Oct 28

At this time of year the fruits of Ilex verticillata (common winterberry holly) are conspicuous in wetlands of northeastern Wisconsin, as in the above photo from Oconto County near the shore of Green Bay.

Green Bay reached its lowest temperature of the season this morning, 29° F.

Oct 27

High temperature of 55 in Green Bay. Cornus racemosa (gray dogwood) leaves are an interesting dark, dull red color.

There are numerous Canada Geese in the Green Bay area, as here on UW-Green Bay's new stormwater detention pond.

Oct 25 Green Bay reached a low of 30° F this morning at 7:00 am and there was frost on roofs and car windows, but it was a bright sunny day thereafter with temperatures rising into the mid 50's. Here's a view of the forest canopy on UWGB's Cofrin arboretum. Most of the trees with many remaining leaves in the photo are Quercus alba (white oaks).
Oct 22

Some wild plants of Rubus idaeus (raspberries) were in flower this morning on the UWGB campus. On closer inspection I found developing fruit and even one nearly ripe fruit.

I had thought all the Ruby-throated Hummingbirds had left for warmer lands but today at 12:15 PM an imature fed at my Pineapple Sage flowers for half an hour. Will watch for it again but it is really late for this youngster to be in town, Green Bay (DaveParsons).

Oct 21 While some trees in the Green Bay area are completely bare of leaves, others are still green. Here's a labeled view from UWGB's Cofrin Arboretum.
Oct 18 We've had some very warm weather this Fall and there are reports of numerous plants breaking dormancy contrary to their best interests. One conspicuous species on the UWGB campus is Cornus stolonifera (red-osier dogwood). Numerous individuals have been observed in flower. They normally flower in mid to late May, but apparently something in the recent weather has produced the stimulous to begin flowering now. Cornus racemosa (gray dogwood) which normally flowers 3 or 4 weeks later than C. stolonifera has not shown any sign of breaking dormancy even where the two species grow close together.
Oct 17 Deer are approaching the "rut" season and an increase in car/deer accidents is to be expected.
Oct 15 Green Bay has received 0.26 inches of rain since yesterday for a total of 1.05 inches for October to date. That is about average.
Oct 14 Low temperature in Green Bay was 32° F again.
Oct 13 Widespread frost again this morning in northeastern Wisconsin. Green Bay's low temperature was 32° F and Rhinelander fell to 25°. The day was mostly sunny and there are still good fall colors in some places.
Oct 12 There was widespread frost and in some cases freezing temperatures in northeastern Wisconsin today, with a low of 30° F at the weather station in Green Bay and 27° in Rhinelander..
Oct 09

Green Bay's high temperature of 86° F broke the old record of 83 set in 1949. Manitowoc, Sturgeon Bay and Appleton also set record high temperatures for this date.

There are several reports that there is a conspicuous increase in birds in the Green Bay area, presumably moving south on the heels of the abrupt influx of colder air last night.

A windy day in Green Bay with an average speed of 13 mph WNW and gusts to 33.

Oct 08 Green Bay reached a high temperature of 85° F at 4 pm. A cold front moved in from the northwest and temperatures dropped from 81° F to 70 between 5 and 6 pm.
Oct 07

Green Bay's high temperature of 86° F broke the old record of 81 set in 1966. Other record high temperatures for the date were recorded at Antigo (83), Sturgeon Bay (83), Merrill (84), Marshfield (84, Wausau (84), Oshkosh (85), Wisconsin Rapids (85), Appleton (87) and Manitowoc (87).

The sugar maple forests are mostly well past their peak in northeastern Wisconsin, but there is still some good Fall color in the interior of some forests and where the oaks are prominent, as here in Marinette County.

Oct 06 It wasn't a new record high temperature, but Green Bay reached 87° today as unseasonably hot weather has moved into the region. The "normal" high temperature for this date is 62°. The minimum temperature for today was 69° which broke the old record of 62° with room to spare. This is especially remarkable because there were only 2 days all summer that had low temperatures higher than 69°.
Oct 05 Green Bay set a new record high temperature of 86° F today.
Oct 04

Leaf color is still quite good in some places, but in others the leaves have mostly fallen (both sites are on the UW-Green Bay campus). The leafless site is all Fraxinus pennsylvanica (green ash) which loses it leaves quite early.

Some Rhus typhina (staghorn sumac) is at absolute peak of Fall color, but there will be a rapid decline in the next week.

Oct 02 Light rain and fog overnight and into the morning in Green Bay. Rhus typhina (staghorn sumac) is also in about full color, or in some sites is past the peak and leaves are falling rapidly.
Oct 01 Cornus racemosa (gray dogwood) is at about peak Fall color now in the Green Bay area.

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Last updated on April 15, 2014