The year at a glance
Averages from 30 years of climate history, 1991-2020
| DeKalb | Metric | Sycamore |
|---|---|---|
| 183 days | Sunny daysclear or partly cloudy skies | 183 days |
| 38 in | Precipitationper year | 38 in |
| 125 days | Wet daysrain or snow per year | 125 days |
| 33 in | Snowfallper year | 37 in |
| 12 days | Hot daysabove 90 °F | 13 days |
| 140 days | Freezing nightsat or below 32 °F | 140 days |
| 71% | Humidityaverage relative | 71% |
| 49 °F | Average temperatureyear round | 49 °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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| DeKalb high | 28 | 33 | 45 | 59 | 70 | 80 | 83 | 81 | 75 | 62 | 46 | 34 |
| Sycamore high | 28 | 33 | 45 | 59 | 70 | 80 | 83 | 81 | 75 | 62 | 46 | 34 |
| DeKalb low | 13 | 17 | 27 | 37 | 49 | 59 | 63 | 61 | 53 | 41 | 29 | 19 |
| Sycamore low | 13 | 17 | 27 | 37 | 49 | 59 | 63 | 61 | 53 | 41 | 29 | 19 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| DeKalb | 2.0 | 1.9 | 2.6 | 4.4 | 4.8 | 4.2 | 3.5 | 3.5 | 3.2 | 3.1 | 2.4 | 2.2 |
| Sycamore | 2.0 | 1.9 | 2.6 | 4.4 | 4.8 | 4.2 | 3.5 | 3.5 | 3.2 | 3.1 | 2.4 | 2.2 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| DeKalb | 11 | 11 | 14 | 14 | 15 | 17 | 20 | 20 | 20 | 17 | 14 | 12 |
| Sycamore | 11 | 11 | 14 | 14 | 15 | 17 | 20 | 20 | 20 | 17 | 14 | 12 |
Keep comparing
Nearby cities and popular picks for each side of this matchup. Any two cities can be compared from the home page.
DeKalb vs another city
- DeKalb vs Genoa, IL
- DeKalb vs Elburn, IL
- DeKalb vs Rochelle, IL
- DeKalb vs Campton Hills, IL
- DeKalb vs Hampshire, IL
- DeKalb vs New York, NY
- DeKalb vs Los Angeles, CA
- DeKalb vs Chicago, IL
- DeKalb vs Houston, TX
- DeKalb vs Phoenix, AZ
- DeKalb vs Philadelphia, PA
Sycamore vs another city
- Sycamore vs Genoa, IL
- Sycamore vs Hampshire, IL
- Sycamore vs Elburn, IL
- Sycamore vs Campton Hills, IL
- Sycamore vs Pingree Grove, IL
- Sycamore vs New York, NY
- Sycamore vs Los Angeles, CA
- Sycamore vs Chicago, IL
- Sycamore vs Houston, TX
- Sycamore vs Phoenix, AZ
- Sycamore vs Philadelphia, PA
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).