{
    "dataset": "Ilystics weather delay days \u2014 Denver, CO",
    "landingPage": "https://ilystics.com/weather-delay-days/denver-co",
    "license": "https://creativecommons.org/licenses/by/4.0/",
    "attribution": "Ilystics LLC, https://ilystics.com",
    "sourceData": "NOAA NCEI Global Historical Climatology Network - Daily (GHCND), U.S. Government public domain",
    "algorithmVersion": "v2.3.0",
    "generatedAt": "2026-08-23T17:13:33+00:00",
    "baseline": {
        "startYear": 2016,
        "endYear": 2025,
        "observedDays": 3653
    },
    "location": {
        "metro": "Denver",
        "state": "CO",
        "lat": 39.7392,
        "lng": -104.9903
    },
    "soilBasis": {
        "effectiveSoil": "silt",
        "baseDryingDays": 2,
        "label": "Silt, 2.0 base drying day(s)"
    },
    "station": [],
    "scope": "Soil-dependent site work only: earthwork, grading, excavation, foundations and underground utilities. Enclosed and vertical construction is not modelled.",
    "readMe": "Monthly figures are independent baselines and must not be summed into an annual total: doing so assumes a jobsite never improves over a year. See https://ilystics.com/weather-delay-days for the full explanation.",
    "months": [
        {
            "month": 1,
            "monthName": "January",
            "avgPrecipInches": 0.45,
            "lostWorkdaysMean": 7,
            "lostWorkdaysMedian": 8,
            "abnormalThreshold": 11,
            "dryingDaysPerRainDay": 3.08,
            "workdayCoveragePct": 100,
            "lostWorkdaysByYear": {
                "2016": 1,
                "2017": 7,
                "2018": 9,
                "2019": 11,
                "2020": 0,
                "2021": 3,
                "2022": 9,
                "2023": 8,
                "2024": 7,
                "2025": 11
            }
        },
        {
            "month": 2,
            "monthName": "February",
            "avgPrecipInches": 0.74,
            "lostWorkdaysMean": 7,
            "lostWorkdaysMedian": 7,
            "abnormalThreshold": 11,
            "dryingDaysPerRainDay": 3.08,
            "workdayCoveragePct": 100,
            "lostWorkdaysByYear": {
                "2016": 5,
                "2017": 2,
                "2018": 9,
                "2019": 7,
                "2020": 14,
                "2021": 10,
                "2022": 9,
                "2023": 6,
                "2024": 5,
                "2025": 6
            }
        },
        {
            "month": 3,
            "monthName": "March",
            "avgPrecipInches": 1.6,
            "lostWorkdaysMean": 5,
            "lostWorkdaysMedian": 5,
            "abnormalThreshold": 8,
            "dryingDaysPerRainDay": 1.27,
            "workdayCoveragePct": 100,
            "lostWorkdaysByYear": {
                "2016": 4,
                "2017": 1,
                "2018": 7,
                "2019": 4,
                "2020": 5,
                "2021": 11,
                "2022": 7,
                "2023": 2,
                "2024": 8,
                "2025": 3
            }
        },
        {
            "month": 4,
            "monthName": "April",
            "avgPrecipInches": 1.45,
            "lostWorkdaysMean": 6,
            "lostWorkdaysMedian": 6,
            "abnormalThreshold": 8,
            "dryingDaysPerRainDay": 1.25,
            "workdayCoveragePct": 100,
            "lostWorkdaysByYear": {
                "2016": 5,
                "2017": 6,
                "2018": 6,
                "2019": 3,
                "2020": 6,
                "2021": 10,
                "2022": 0,
                "2023": 7,
                "2024": 6,
                "2025": 8
            }
        },
        {
            "month": 5,
            "monthName": "May",
            "avgPrecipInches": 2.94,
            "lostWorkdaysMean": 10,
            "lostWorkdaysMedian": 10,
            "abnormalThreshold": 14,
            "dryingDaysPerRainDay": 1.22,
            "workdayCoveragePct": 100,
            "lostWorkdaysByYear": {
                "2016": 10,
                "2017": 18,
                "2018": 11,
                "2019": 12,
                "2020": 3,
                "2021": 14,
                "2022": 9,
                "2023": 7,
                "2024": 6,
                "2025": 10
            }
        },
        {
            "month": 6,
            "monthName": "June",
            "avgPrecipInches": 1.86,
            "lostWorkdaysMean": 5,
            "lostWorkdaysMedian": 6,
            "abnormalThreshold": 9,
            "dryingDaysPerRainDay": 0.96,
            "workdayCoveragePct": 100,
            "lostWorkdaysByYear": {
                "2016": 8,
                "2017": 1,
                "2018": 7,
                "2019": 1,
                "2020": 3,
                "2021": 9,
                "2022": 4,
                "2023": 13,
                "2024": 0,
                "2025": 7
            }
        },
        {
            "month": 7,
            "monthName": "July",
            "avgPrecipInches": 1.54,
            "lostWorkdaysMean": 3,
            "lostWorkdaysMedian": 3,
            "abnormalThreshold": 5,
            "dryingDaysPerRainDay": 1,
            "workdayCoveragePct": 100,
            "lostWorkdaysByYear": {
                "2016": 4,
                "2017": 3,
                "2018": 7,
                "2019": 5,
                "2020": 0,
                "2021": 2,
                "2022": 3,
                "2023": 3,
                "2024": 1,
                "2025": 2
            }
        },
        {
            "month": 8,
            "monthName": "August",
            "avgPrecipInches": 1.02,
            "lostWorkdaysMean": 3,
            "lostWorkdaysMedian": 2,
            "abnormalThreshold": 5,
            "dryingDaysPerRainDay": 1.25,
            "workdayCoveragePct": 100,
            "lostWorkdaysByYear": {
                "2016": 3,
                "2017": 8,
                "2018": 5,
                "2019": 2,
                "2020": 0,
                "2021": 5,
                "2022": 2,
                "2023": 2,
                "2024": 0,
                "2025": 0
            }
        },
        {
            "month": 9,
            "monthName": "September",
            "avgPrecipInches": 0.94,
            "lostWorkdaysMean": 3,
            "lostWorkdaysMedian": 3,
            "abnormalThreshold": 5,
            "dryingDaysPerRainDay": 1.07,
            "workdayCoveragePct": 100,
            "lostWorkdaysByYear": {
                "2016": 1,
                "2017": 4,
                "2018": 2,
                "2019": 4,
                "2020": 3,
                "2021": 1,
                "2022": 2,
                "2023": 5,
                "2024": 3,
                "2025": 6
            }
        },
        {
            "month": 10,
            "monthName": "October",
            "avgPrecipInches": 0.72,
            "lostWorkdaysMean": 4,
            "lostWorkdaysMedian": 4,
            "abnormalThreshold": 7,
            "dryingDaysPerRainDay": 1.13,
            "workdayCoveragePct": 100,
            "lostWorkdaysByYear": {
                "2016": 1,
                "2017": 10,
                "2018": 6,
                "2019": 7,
                "2020": 4,
                "2021": 3,
                "2022": 1,
                "2023": 2,
                "2024": 0,
                "2025": 4
            }
        },
        {
            "month": 11,
            "monthName": "November",
            "avgPrecipInches": 0.51,
            "lostWorkdaysMean": 4,
            "lostWorkdaysMedian": 3,
            "abnormalThreshold": 7,
            "dryingDaysPerRainDay": 1.27,
            "workdayCoveragePct": 100,
            "lostWorkdaysByYear": {
                "2016": 3,
                "2017": 0,
                "2018": 6,
                "2019": 10,
                "2020": 5,
                "2021": 0,
                "2022": 3,
                "2023": 3,
                "2024": 8,
                "2025": 0
            }
        },
        {
            "month": 12,
            "monthName": "December",
            "avgPrecipInches": 0.42,
            "lostWorkdaysMean": 4,
            "lostWorkdaysMedian": 5,
            "abnormalThreshold": 7,
            "dryingDaysPerRainDay": 2.63,
            "workdayCoveragePct": 100,
            "lostWorkdaysByYear": {
                "2016": 8,
                "2017": 5,
                "2018": 1,
                "2019": 3,
                "2020": 5,
                "2021": 1,
                "2022": 8,
                "2023": 4,
                "2024": 0,
                "2025": 5
            }
        }
    ]
}