The year at a glance
Averages from 30 years of climate history, 1991-2020
| Oak Brook | Metric | Phoenix |
|---|---|---|
| 182 days | Sunny daysclear or partly cloudy skies | 307 days |
| 38 in | Precipitationper year | 7 in |
| 127 days | Wet daysrain or snow per year | 33 days |
| 42 in | Snowfallper year | 0 in |
| 21 days | Hot daysabove 90 °F | 163 days |
| 131 days | Freezing nightsat or below 32 °F | 2 days |
| 71% | Humidityaverage relative | 35% |
| 51 °F | Average temperatureyear round | 74 °F |
Monthly temperatures
Average daily high and low for each month, in °F. The gap between the two lines is what an ordinary day feels like across the year.
Daily highs
Daily lows
View monthly temperatures as a table
| City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Oak Brook high | 32 | 36 | 48 | 60 | 72 | 82 | 85 | 83 | 77 | 64 | 49 | 37 |
| Phoenix high | 66 | 69 | 76 | 83 | 92 | 102 | 105 | 103 | 98 | 87 | 75 | 65 |
| Oak Brook low | 16 | 19 | 28 | 38 | 49 | 59 | 63 | 62 | 54 | 42 | 31 | 22 |
| Phoenix low | 44 | 47 | 52 | 58 | 67 | 75 | 82 | 82 | 76 | 64 | 51 | 43 |
Monthly precipitation
Total rain plus melted snow for each month, in inches. Taller bars mean wetter months.
View monthly precipitation as a table
| City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Oak Brook | 2.1 | 2.0 | 2.7 | 4.4 | 4.5 | 4.2 | 3.7 | 3.7 | 2.9 | 3.1 | 2.5 | 2.1 |
| Phoenix | 0.9 | 1.1 | 0.8 | 0.2 | 0.1 | 0.1 | 0.6 | 0.9 | 0.7 | 0.6 | 0.5 | 0.8 |
Monthly sunny days
Days each month with clear or partly cloudy skies, so compare the same month between cities.
View monthly sunny days as a table
| City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Oak Brook | 11 | 11 | 14 | 13 | 15 | 16 | 20 | 20 | 20 | 17 | 14 | 12 |
| Phoenix | 23 | 21 | 25 | 27 | 29 | 29 | 24 | 26 | 28 | 28 | 25 | 24 |
Keep comparing
Nearby cities and popular picks for each side of this matchup. Any two cities can be compared from the home page.
Oak Brook vs another city
- Oak Brook vs Clarendon Hills, IL
- Oak Brook vs Hinsdale, IL
- Oak Brook vs Westmont, IL
- Oak Brook vs Westchester, IL
- Oak Brook vs Hillside, IL
- Oak Brook vs Western Springs, IL
- Oak Brook vs New York, NY
- Oak Brook vs Los Angeles, CA
- Oak Brook vs Chicago, IL
- Oak Brook vs Houston, TX
- Oak Brook vs Philadelphia, PA
Phoenix vs another city
- Phoenix vs Glendale, AZ
- Phoenix vs Paradise Valley, AZ
- Phoenix vs Sun City, AZ
- Phoenix vs Youngtown, AZ
- Phoenix vs Tolleson, AZ
- Phoenix vs El Mirage, AZ
- Phoenix vs New York, NY
- Phoenix vs Los Angeles, CA
- Phoenix vs Chicago, IL
- Phoenix vs Houston, TX
- Phoenix vs Philadelphia, PA
- Phoenix vs San Antonio, TX
About this data
Every figure on this page is a 30 year average computed from daily climate history for 1991-2020, using each city's own coordinates. Wet days count days with measurable precipitation, calibrated against the wet day counts in NOAA's published climate normals. Sunny days count clear plus partly cloudy days, defined as average cloud cover of 63 percent or less and calibrated against NOAA's published sky cover tables. Snowfall figures are model estimates anchored to NOAA station measurements near each city.
Weather data by Open-Meteo.com (CC BY 4.0). Contains modified Copernicus Climate Change Service information (ERA5, ERA5-Land).