Catonsville Climate by Month
Catonsville, Maryland, United States
Hot summers and cold winters, with rain spread through the year.
Hot summers and cold winters, with rain spread through the year: that's Catonsville's climate in short. July is the warmest month, with highs around 87°F (31°C); January is the coolest at 42°F (6°C), and nights dip to 26°F (-3°C). It gets 47 in (1190 mm) of rain a year, spread across the months.
- Warmest month
- 87°F(31°C)
- Average high, July
- Coldest nights
- 26°F(-3°C)
- Average low, January
- Rain per year
- 47 in(1190 mm)
- No clear rainy season
- Humidity
- 63%
- Sunniest: June
Best and worst months in Catonsville
Best for weatherMay is the best time for weather in Catonsville: highs near 75°F (24°C) and about 4.4 in (111 mm) of rain a month.
Least pleasantJanuary is the least pleasant month: it's the coldest, with highs of only 42°F (6°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 May.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Catonsville weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 42°F(6°C) | 26°F(-3°C) | 3.2 in(82 mm) | 60% | 1.9 |
| FebFebruary | 45°F(7°C) | 27°F(-3°C) | 2.9 in(73 mm) | 55% | 2.8 |
| MarMarch | 54°F(12°C) | 34°F(1°C) | 4.1 in(104 mm) | 61% | 3.7 |
| AprApril | 65°F(19°C) | 44°F(7°C) | 3.5 in(90 mm) | 55% | 4.7 |
| MayMayBest | 75°F(24°C) | 54°F(12°C) | 4.4 in(111 mm) | 63% | 5.4 |
| JunJune | 83°F(28°C) | 63°F(17°C) | 4.2 in(107 mm) | 65% | 5.7 |
| JulJuly | 87°F(31°C) | 67°F(20°C) | 4.2 in(107 mm) | 66% | 5.7 |
| AugAugust | 85°F(30°C) | 66°F(19°C) | 4.4 in(111 mm) | 69% | 5.1 |
| SepSeptember | 79°F(26°C) | 59°F(15°C) | 4.9 in(124 mm) | 70% | 4.1 |
| OctOctober | 68°F(20°C) | 47°F(9°C) | 3.7 in(95 mm) | 68% | 3.0 |
| NovNovember | 56°F(14°C) | 38°F(3°C) | 3.3 in(84 mm) | 64% | 2.1 |
| DecDecember | 46°F(8°C) | 30°F(-1°C) | 4.0 in(102 mm) | 64% | 1.7 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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