Markham, IL
Climate overview — based on NOAA 1991-2020 normals from PARK FOREST, IL US.
Year-round temperatures (°F)
Climate summary
Markham has an annual average temperature of 49.8°F with about 42.1 inches of precipitation per year and 28.2 inches of snow. The warmest month is July (average high 83.9°F), and the coldest is January (average low 15.2°F). June is typically the wettest month (4.91 in) and February the driest (2.15 in). Snow typically falls from October through April.
Best time to visit Markham
Full guide →Climate change signal
All-time records →46 of 366 (12.6%) of Markham's all-time daily heat records have been set since 2015. If records were spread evenly across the station's history, only about 5% would fall in any given decade.
| 1950s | 67 | |
| 1960s | 44 | |
| 1970s | 36 | |
| 1980s | 62 | |
| 1990s | 38 | |
| 2000s | 42 | |
| 2010s | 52 | |
| 2020s | 25 |
Bars: number of all-time daily heat records still standing that were set in each decade.
Monthly averages
| Month | Avg High | Avg Low | Avg Temp | Precipitation | Snow | Rainy days |
|---|---|---|---|---|---|---|
| January | 31.1°F | 15.2°F | 23.2°F | 2.49 in | 10.2 in | 11 |
| February | 35.2°F | 18.4°F | 26.8°F | 2.15 in | 7.5 in | 9 |
| March | 46.4°F | 28.1°F | 37.2°F | 2.65 in | 4.9 in | 10 |
| April | 59.3°F | 38.3°F | 48.8°F | 4.02 in | 0.5 in | 12 |
| May | 70.6°F | 49.3°F | 60.0°F | 4.57 in | — | 13 |
| June | 80.2°F | 58.9°F | 69.5°F | 4.91 in | — | 10 |
| July | 83.9°F | 63.8°F | 73.9°F | 4.73 in | — | 9 |
| August | 82.0°F | 62.0°F | 72.0°F | 4.02 in | — | 9 |
| September | 75.8°F | 54.6°F | 65.2°F | 3.44 in | — | 8 |
| October | 63.1°F | 42.4°F | 52.8°F | 3.65 in | 0.2 in | 11 |
| November | 48.2°F | 31.4°F | 39.8°F | 3.00 in | 0.9 in | 10 |
| December | 36.3°F | 21.5°F | 28.9°F | 2.47 in | 4.0 in | 11 |
Climate twins of Markham
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).