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Historical Climate Archive

Minneapolis

Explore 1820–Present of temperature · precipitation · snowfall records through original graphical analysis, long-term trends and year-by-year station archives.

Minneapolis Climate Station
Featured StationMinneapolis climate archive
Record Period1820–Present
Data FocusTemperature · Precipitation · Snowfall
Archive Links344 Resources
Latest Update31 May 2026

Station Overview

Graphical Climatology of Minneapolis-St. Paul Area Temperatures, Precipitation, and Snowfall (1820 – Present)

The following is a graphical climatology of Minneapolis-St. Paul, Minnesota temperatures, precipitation, and snowfall, from the start of 1820 (Fort Snelling) into the present year 2026. Presented are summary overview charts, a link to a year-by-year account of early (1820-1869) Minnesota weather history, followed by year-to-year graphs depicting daily temperatures, precipitation, and snowfall. Original source data are from Fort Snelling (1820-1858), St. Paul Smithsonian recordings (1859-1872); and government weather service observations for St. Paul (1873-1890), downtown Minneapolis (1890-1938), and the Minneapolis-St. Paul International Airport (1938-present). Daily snowfall totals date from 1891, snow depth data from 1893.

Data were obtained from the National Archives, the Minnesota Historical Society, The University of Minnesota Periodicals Library, the National Climatic Data Center, the Minneapolis-St. Paul National Weather Service Office online site, and the Minnesota Climatology Working Group. Monthly updates are from the site: https://www.dnr.state.mn.us/climate/historical/lcd.html?loc=msp

Data Collection 01

Climate Overview Graphs — RECENT YEARS

Data Collection 02

Minneapolis-St. Paul Daily Temperature Means & Extremes

Data Collection 03

Other Minneapolis-St. Paul Daily Temperature Stats And Tables

Data Collection 04

Annual Mean & Extreme Temperature Graphs

Data Collection 05

Precipitation:

Data Collection 06

Snowfall:

  • MONTH/HOUR CLIMOGRAMS AND OTHER:

THE MINNEAPOLIS-ST. PAUL AREA TEMPERATURE RECORD: OFFICIAL WEATHER BUREAU OBSERVATIONS (1873-PRESENT) AND RECONSTRUCTED PIONEER ERA RECORDINGS (1820-1872)

Temperature graphs for the 1873-present period are based on official St. Paul or Minneapolis daily absolute maximum and minimum temperature observations (nearly all for the midnight-to-midnight hourly interval), the standard method of recording “summary-of-the-day” temperature statistics for first-order weather stations.

However, original summary-of-the-day temperature observations for the 1820-1872 “Pioneer” era (along with those for cloudiness, wind direction, and wind force) consisted of fixed-time scheme observations conforming to some prescribed format (e.g., 7AM, 2PM, and 9PM; or Sunrise, 9AM, 3PM, and 9PM; or others).

For methodological consistency, the 1820-1872 temperature observations were converted into midnight-to-midnight absolute maxima and minima estimates, using application of 1961-1980 statistical regression relationships between Minneapolis-St. Paul Airport temperature, cloudiness, and wind information at hours corresponding to the old fixed-scheme times, and 1961-1980 midnight to midnight absolute daily temperature maxima and minima [Fisk, M.S. Thesis, University of Wisconsin-Madison]. This reconstruction created reasonable approximations of the Pioneer era daily midnight to midnight maxima and minima, and in addition to reducing biases in (recalculated) 1820-1872 monthly mean temperatures, allowed for daily maximum/minimum temperature graphs to be constructed, in the same form throughout - 1820 to the present.

Data Collection 07

Year-To-Year Graphs – Interpretation

For a given year’s graphical display (see links below), the uppermost chart is a “floating-bar” chart of the daily maxima and minima. Superimposed are two line traces, the upper one connecting average daily maxima, the lower one average daily minima. The bars depict the varying diurnal, synoptic, long-wave, and seasonal influences on temperature over time, and they are deliberately adjoined with no spaces in-between, creating an enhanced "signature" effect, so to speak.

The second chart down depicts the arithmetic departures of day-to-day mean temperatures (sum of the daily maximum plus the daily minimum divided by two) less the corresponding calendar-day average means. Vertical lines extending upward from the zero line indicate above average means for the day (colored red), those extending downward indicate below average daily means (colored blue). In the entire series of more than 70,000 days, greatest positive departure for any individual day is +39 F on 17 March 2012 , the greatest negative departure -45 F for 1 January 1864 .

(It should be mentioned that clicking on the floating-bar charts a second time after they appear on the screen will enlarge them even further).

The third chart down shows chart two’s departures in deseasonalized or “standardized” form. This adjusts for the fact that individual calendar days have higher or lower inherent year-to-year variability (standard deviations) in daily mean temperature. Dividing a given day’s departure from average by its’ respective calendar day mean temperature standard deviation creates the “relative” departures or “z-scores”. Only five daily departures in the entire series are plus or minus 3.5 or greater. Three of these, all negatives, came over the four-day period 4-7 November 1991, associated with an unseasonably cold arctic air outbreak in the wake of the Great 1991 Halloween snowstorm. The fourth chart down depicts daily rainfall, the fifth and sixth charts, respectively, daily snowfall and snow depths.

Data Collection 09

Analytics

Sample Regimes, PCA Modes, PDFs & Extremes
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Temperature+
Regimes+

Sample analysis: group years by recurring temperature patterns for Minneapolis–St. Paul, then compare transitions between common, unusual and persistent regimes. This is sample Analytics content for layout and workflow testing. Replace it with the station’s verified analysis when the final material is ready.

Extremes+

Sample analysis: review the upper and lower tails of the cold and heat record for Minneapolis–St. Paul and identify years that merit detailed chart interpretation. This is sample Analytics content for layout and workflow testing. Replace it with the station’s verified analysis when the final material is ready.

Snow+
PCA Modes+

Sample analysis: demonstrate how leading modes can separate broad snow-season variability variability from shorter-lived anomalies at Minneapolis–St. Paul. This is sample Analytics content for layout and workflow testing. Replace it with the station’s verified analysis when the final material is ready.

Extremes+

Sample analysis: review the upper and lower tails of the snowfall record for Minneapolis–St. Paul and identify years that merit detailed chart interpretation. This is sample Analytics content for layout and workflow testing. Replace it with the station’s verified analysis when the final material is ready.

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