Showing posts with label climatology graphs for Grand Rapids Michigan. Show all posts
Showing posts with label climatology graphs for Grand Rapids Michigan. Show all posts
Wednesday, February 21, 2024

Trend for lowest minimum temperature in Grand Rapids, MI 1896-2024

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The trend is colder by almost 2 degrees F for lowest minimum temperature over 129 years at KGRR.  This chart shows, like the charts for heat...
Wednesday, February 7, 2024

Trend for annual heating degree days in Grand Rapids, Michigan 1904-2023

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The mean for annual heating degree days has dropped about 63 HDD from 1904-1963 at 6726 shown, to 6663 for 1963-2023, or 0.94%.  In the last...

Trend for annual mean average temperature in Grand Rapids, Michigan 1898-2023

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The mean has risen 0.1 degrees F 1898-1963 at 48.2 shown, to 48.3 1963-2023, which is 0.2%. The uptrend traverses about 0.9 degrees F over 1...
Tuesday, February 6, 2024

Trend for annual precipitation in Grand Rapids, Michigan 1903-2023

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 Wetter! The long term trend for the Oceanic Nino Index is thought to be predictive of this wetter outcome in the Upper Midwest. The index t...
Wednesday, July 5, 2023

All you need to know about the hottest day ever

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  Tuesday’s global average temperature was calculated by a model . . . to estimate daily average temperatures starting in 1979. “This is ou...
Friday, June 16, 2023

Trend for average temperature in Grand Rapids, Michigan shows an anomaly of less than +0.5 degrees F after 124 years

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 Could be just a heat island effect from KGRR.
Thursday, September 8, 2022

Trend for annual precipitation in Grand Rapids, Michigan 1903-2021

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  The mean annual has risen to 34.79 through 2021 from 31.45 through 1963 . . . an extra 3.34 inches annually, in keeping with a long term s...
Tuesday, April 5, 2022

Average temperature in 2021 in Grand Rapids, Michigan, was the eighth highest on record in 124 years

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The trend line after 123 years of data shows average temperature in Grand Rapids, Michigan, rising 0.7 degrees F, or 0.388 degrees C, 65% le...
Sunday, June 27, 2021

June 2021 to date is 2nd rainiest June ever in Grand Rapids, MI, and one of just 23 months since 1892 with 8 inches of rain or more, ranking 14th so far

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June 2021 to date is the 14th rainiest month in Grand Rapids, MI, since 1892:   Jun 1892: 13.22 Sep 1986: 11.85 Apr 2013: 11.10 May 2001: 10...
Friday, March 12, 2021

Trend for annual precipitation in Grand Rapids, Michigan, 1903-2020 is 5+ inches above the mean

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Trend for first day <= 32 degrees F in Grand Rapids, Michigan, 1896-2020 is three days earlier than the mean date October 13

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Trend for highest maximum temperature for Grand Rapids, Michigan, 1896-2020 is not quite 1.5 degrees F below the mean

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Trend for lowest minimum temperature for Grand Rapids, Michigan, 1896-2021 is 2 degrees F below the mean

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Trend for cooling degree days in Grand Rapids, Michigan, is less than 1% below the mean 1904-2020

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Trend for heating degree days in Grand Rapids, Michigan, is running about 1.9% below the mean 1904-2020

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Trend for average temperature in Grand Rapids, Michigan, is 0.3 degrees F above the mean 1898-2020

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Friday, October 16, 2020

Trend for first freeze date in Grand Rapids, Michigan since 1896 shows the date trending earlier, not later, because it was much warmer in America before World War II than it is now

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Tuesday, September 15, 2020

Given urban heat island distortions of +1 to +7 degrees F, average temperature rise of less than 0.3 degrees F above the mean since 1898 in Grand Rapids, MI is suspect

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Given urban heat island distortions of +1 to +7 degrees F, average temperature rise of less than 0.3 degrees F above the mean since 1898 in...
Saturday, January 25, 2020

Trend for HDD in Grand Rapids, Michigan, since 1904 shows winters moderating about 1.5% from the mean over the last century

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Trend for CDD in Grand Rapids, Michigan, since 1904 shows slightly cooler summers

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