Gurnee Climate by Month
Gurnee, Illinois, United States
Warm summers and freezing winters, with rain spread through the year.
The climate in Gurnee is one of warm summers and freezing winters, with rain spread through the year. Expect highs of 81°F (27°C) in July and 31°F (-1°C) in January, with the coldest nights (January) near 15°F (-9°C). About 36 in (912 mm) of rain falls in a typical year, with no clear rainy season.
- Warmest month
- 81°F(27°C)
- Average high, July
- Coldest nights
- 15°F(-9°C)
- Average low, January
- Rain per year
- 36 in(912 mm)
- No clear rainy season
- Humidity
- 74%
- Sunniest: July
Best and worst months in Gurnee
Best for weatherThe most comfortable weather comes in June and September, with highs around 75°F (24°C) and about 3.7 in (94 mm) of rain a month.
Least pleasantJanuary is the least pleasant month: it's the coldest, with highs of only 31°F (-1°C).
Comfort combines how close the afternoon high is to 75°F (24°C) with how much rain falls and how humid it is. See where the weather is best in September.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Gurnee weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 31°F(-1°C) | 15°F(-9°C) | 1.9 in(48 mm) | 95% | 1.4 |
| FebFebruary | 35°F(2°C) | 19°F(-7°C) | 1.6 in(40 mm) | 82% | 2.4 |
| MarMarch | 45°F(7°C) | 28°F(-2°C) | 2.2 in(57 mm) | 69% | 3.5 |
| AprApril | 56°F(14°C) | 37°F(3°C) | 4.1 in(103 mm) | 64% | 4.5 |
| MayMay | 67°F(20°C) | 46°F(8°C) | 4.1 in(105 mm) | 69% | 5.2 |
| JunJuneBest | 76°F(25°C) | 56°F(13°C) | 4.0 in(101 mm) | 73% | 5.9 |
| JulJuly | 81°F(27°C) | 61°F(16°C) | 3.4 in(87 mm) | 73% | 5.9 |
| AugAugust | 80°F(26°C) | 61°F(16°C) | 4.2 in(107 mm) | 75% | 5.1 |
| SepSeptemberBest | 73°F(23°C) | 53°F(12°C) | 3.4 in(86 mm) | 71% | 4.3 |
| OctOctober | 62°F(17°C) | 42°F(6°C) | 2.7 in(68 mm) | 68% | 2.7 |
| NovNovember | 47°F(9°C) | 31°F(-1°C) | 2.2 in(56 mm) | 74% | 1.7 |
| DecDecember | 35°F(2°C) | 20°F(-6°C) | 2.1 in(54 mm) | 78% | 1.3 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
Places with a similar climate
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