Weather History

This site began collecting data on 10/12/24

Last 24 hours

Omaha, NE Normals

Station Records

marquetteweather.com

Highest recorded temperature: 81.9 °F on Oct 29, 2024
Lowest recorded temperature: 25.0 °F on Nov 21, 2024
Total recorded temperature range: 56.9 °F

Highest recorded pressure: 30.53 inHg on Oct 26, 2024
Lowest recorded pressure: 29.05 inHg on Nov 18, 2024
Total recorded pressure range: 1.48 inHg

Highest recorded wind speed: 28.0 MPH on Oct 29, 2024

Wettest day on record: Nov 18, 2024 with 1.25 in of rain.

Sunniest day on record: Oct 13, 2024 with 16.1 hours of sunshine.

Official Weather Data

Forecast Accuracy

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Notes:

General

• The above data, with the exception of normals, were produced by a private weather station located near 132nd & Pacific in Omaha, NE. The station went online October 12, 2024.
• If you're seeking official weather data for Omaha, please visit NOAA NOWData.

Temperatures

• "NWS" averages are the sum of the daily high temperature & daily low temperature in whole degrees divided by 2. This is the National Weather Service method used for climatological summaries. All other fields labelled "Avg" contain integrated averages using one minute samples. "Avg" labelled summary columns contain weighted means (i.e. a partial hour/day/month counts less than a full one).
• CDD = Cooling Degree Days & HDD = Heating Degree Days. Degree days are calculated using daily NWS averages compared to a base value of 65°. For example, a day with an avg temperature of 67.7° will have 2.7 CDDs & 0 HDDs. A 33.2° avg temperature will produce 31.8 HDDs & 0 CDDs.
• In the daily & monthly history tables, "Wind Chill" appears only October through April. It is calculated when the temperature is 50 or below and sustained wind speed is greater than 3 mph. Otherwise, it equals the temperature. Likewise, "Heat Index" appears only May through September. It is calculated only when the temperature is 80 or above. Otherwise, it equals the temperature.

Wind

• "Sustained" wind is the rolling 10 minute average sustained wind speed.
• "Wind Dir" is a scalar average of direction irrespective of speed. However, calm winds do not have a valid direction and are not included in the average.
• "Wind Run" uses the 10 minute wind average.
• "Low Sustained" & "Low Max" wind values are omitted from the yearly history table since every field equals 0.

Humidity / Dew Point

• Daily, monthly, and yearly history tables contain corrected humidities and dew points. A custom correction curve addresses an upper end dry bias and a mid-range wet bias inherent to the sensor. A third-party device accurate to within 2% humidity established the deltas used in the algorithm. The daily table contains up-to-date corrections for today. The monthly and yearly tables have corrections through yesterday (updated just after midnight each morning).

Precipitation

• "Liquid" precipitation in the winter is the amount of melted snow and/or ice.

Pressure

• Pressure is recorded in altimeter format. The home page, however, displays "Barometer" in MSLP format by default.

Solar

• UV index is a measurement of ultraviolet radiation at wavelengths of 290 to 390 nm. Scale is 0-16.
• The scale for solar radiation is 0 - 1800 Watts per meter squared. This measurement of the sun's energy (detected between 300 and 1100 nanometers wavelength) can approximate daylight cloud cover relative to clear days for a given time of year. It's also useful for determining solar electricity generation and aerosol levels (pollution, smoke, dust, ash, etc).
• The daily table summary footer for this tab omits "Min" since every value is always 0. Instead you'll see a "Daytime Avg" row displaying weighted averages of all hourly maximums, minimums, and averages between sunrise & sunset.
• In monthly & yearly tables, you'll see a "Daytime Avg" column containing daylight averages. The "Min" column will be entirely missing since every value would be 0.
• Total Radiation is measured in Megajoules (1,000,000 J) per meter squared.

Normals

• "Depart" in the Normals table refers to the average departure (or difference) between our weather station and the official Omaha average temperature.