Precipitation - Cities and FUAs — Change in extreme precipitation in Boulder
Boulder: Precipitation - Cities and FUAs — Change in extreme precipitation was -1.3 Days per year in 2024. ◆ Volatile
Precipitation - Cities and FUAs — Change in extreme precipitation in Boulder, 1981–2024
Source: Organisation for Economic Co-operation and Development. Measured in Days per year.
Analysis
In 2024, precipitation - cities and fuas — change in extreme precipitation in Boulder stood at -1.3 Days per year.
That represents a change of down 65.4% on the previous year and down 111.0% over ten years.
Over the whole period, precipitation - cities and fuas — change in extreme precipitation in Boulder peaked at 3.15 Days per year in 1984 and was at its lowest, -3.16 Days per year, in 2002.
Boulder ranks 1135th of 1314 regions on this measure, in the bottom quarter.
The series is highly variable year to year, so single readings are best treated with caution.
Precipitation - Cities and FUAs — Change in extreme precipitation in Boulder, year by year
| Year | Days per year | Change |
|---|---|---|
| 1981 | -1.36 Days per year | — |
| 1982 | 0.8982 Days per year | -166.1% |
| 1983 | 0.9263 Days per year | +3.1% |
| 1984 | 3.15 Days per year | +240.5% |
| 1985 | 0.8117 Days per year | -74.3% |
| 1986 | 2.38 Days per year | +193.6% |
| 1987 | 0.0132 Days per year | -99.4% |
| 1988 | 0.4406 Days per year | +3239.1% |
| 1989 | -0.1583 Days per year | -135.9% |
| 1990 | 0.8411 Days per year | -631.3% |
| 1991 | 0.4701 Days per year | -44.1% |
| 1992 | 0.155 Days per year | -67.0% |
| 1993 | -0.4455 Days per year | -387.4% |
| 1994 | -2.42 Days per year | +442.3% |
| 1995 | -0.4455 Days per year | -81.6% |
| 1996 | 0.012 Days per year | -102.7% |
| 1997 | 0.6407 Days per year | +5241.4% |
| 1998 | -1.56 Days per year | -343.4% |
| 1999 | 1.1 Days per year | -170.4% |
| 2000 | -2.73 Days per year | -348.6% |
| 2001 | 1.98 Days per year | -172.6% |
| 2002 | -3.16 Days per year | -259.3% |
| 2003 | 0.7557 Days per year | -123.9% |
| 2004 | 0.7846 Days per year | +3.8% |
| 2005 | 0.7282 Days per year | -7.2% |
| 2006 | -1.3 Days per year | -278.8% |
| 2007 | -2.27 Days per year | +74.6% |
| 2008 | -1.5 Days per year | -34.0% |
| 2009 | 1.53 Days per year | -201.6% |
| 2010 | -0.2725 Days per year | -117.9% |
| 2011 | 0.47 Days per year | -272.5% |
| 2012 | -0.9302 Days per year | -297.9% |
| 2013 | 0.9838 Days per year | -205.8% |
| 2014 | -0.6169 Days per year | -162.7% |
| 2015 | 0.9845 Days per year | -259.6% |
| 2016 | -1.27 Days per year | -229.3% |
| 2017 | 0.4683 Days per year | -136.8% |
| 2018 | -1.13 Days per year | -341.4% |
| 2019 | -0.4169 Days per year | -63.1% |
| 2020 | -0.6164 Days per year | +47.9% |
| 2021 | -0.1302 Days per year | -78.9% |
| 2022 | -1.82 Days per year | +1295.3% |
| 2023 | -0.7869 Days per year | -56.7% |
| 2024 | -1.3 Days per year | +65.4% |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1980s | 0.79 Days per year | -1.36 Days per year | 3.15 Days per year | 9 |
| 1990s | -0.1649 Days per year | -2.42 Days per year | 1.1 Days per year | 10 |
| 2000s | -0.5188 Days per year | -3.16 Days per year | 1.98 Days per year | 10 |
| 2010s | -0.1733 Days per year | -1.27 Days per year | 0.9845 Days per year | 10 |
| 2020s | -0.9302 Days per year | -1.82 Days per year | -0.1302 Days per year | 5 |
More reference data data for Boulder
- Cooling and heating degree days - Cities and FUAs — Cooling degree 16.3 Degree days (2025)
- Cooling and heating degree days - Cities and FUAs — Change in cooling -49.07 Degree days (2025)
- Cooling and heating degree days - Cities and FUAs 3,762 Degree days (2025)
- Cooling and heating degree days - Cities and FUAs — Change in heating -659.64 Degree days (2025)
- Precipitation - Cities and FUAs — Extreme precipitation days 1.86 Days per year (2024)
- Dependency ratio - Cities and FUAs 25.3 Percentage of population aged 15-64 years (2024)
- Wind threats - Cities and FUAs — Exposure to wind threats 46.6 Percentage of area (2023)
- Coastal flooding - Cities and FUAs — Built-up area exposure to 0 Percentage of built-up area (2022)
- Main mode of transport to work - Cities and FUAs — Employed persons 125,854 Persons (2023)
- Internet speed - Cities and FUAs — Downloading speed 2.4 Percentage of national value (2025)
Frequently asked questions
- What is precipitation - cities and fuas — change in extreme precipitation in Boulder?
- Precipitation - cities and fuas — change in extreme precipitation in Boulder was -1.3 Days per year in 2024, according to Organisation for Economic Co-operation and Development.
- What is the highest precipitation - cities and fuas — change in extreme precipitation recorded in Boulder?
- The highest recorded value was 3.15 Days per year in 1984.
- What is the lowest precipitation - cities and fuas — change in extreme precipitation recorded in Boulder?
- The lowest recorded value was -3.16 Days per year in 2002.
- How does Boulder rank for precipitation - cities and fuas — change in extreme precipitation?
- Boulder ranks 1135th out of 1314 regions with data for 2024.
- Is precipitation - cities and fuas — change in extreme precipitation rising or falling in Boulder?
- Over the last ten years it is down 111.0%. The long-run trend across the full record is volatile.
- Where does this Boulder data come from?
- The figures come from Organisation for Economic Co-operation and Development, published as part of Precipitation - Cities and FUAs — Change in extreme precipitation days from 1981-2010 period. Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 44 observations, free to reuse under OECD Terms and Conditions (attribution required).
About this data
This dataset provides indicators of total precipitation and extreme precipitation days in Functional Urban Areas (FUAs) and cities. Data sources and methodology The indicators use ERA5-Land data. Total precipitation is the sum of all liquid and frozen water—such as rain and snow—that reaches the Earth's surface each year. It excludes fog, dew, and any precipitation that evaporates before reaching the ground. Extreme precipitation days are defined as days with more than 20 mm of total precipitation. ERA5-Land is used as it provides harmonised, globally consistent coverage at fine spatial resolution (0.1 degree), enabling the production of comparable subnational indicators also where national meteorological data are not available at the required scale. These estimates may differ from official subnational climate statistics due to differences in methodological approaches, such as the use of reanalysis based top down modelling versus in situ observations, along with variations in input data sources, spatial resolution, and the models and algorithms used to generate temperature estimates. Defining FUAs and cities The OECD, in cooperation with the EU, has developed a harmonised definition of functional urban areas (FUAs) to capture the economic and functional reach of cities based on daily commuting patterns (OECD, 2012). FUAs consist of: A city – defined by urban centres in the degree of urbanisation, adapted to the closest local administrative units to define a city. A commuting zone – including all local areas where at least 15% of employed residents work in the city. The delineation process includes: Assigning municipalities surrounded by a single FUA to that FUA. Excluding non-contiguous municipalities. The correspondence table between SAUs and FUAs/cities is available in parquet and csv format. The definition identifies 1 272 FUAs and 1 269 cities in all OECD member countries except Costa Rica and three accession countries. Cite this dataset OECD Regions, cities and local areas database (Precipitations - FUAs), http://oe.cd/geostats Further information OECD Local Data Portal OECD Regions and Cities at a Glance For questions and/or comments, please email CitiesStat@oecd.org