United States · 30-year monthly climate averages
Based on 30 years of climate data, the most comfortable months to visit Denver are May, September and October, when daytime temperatures are agreeable and rainfall is relatively low.
Denver sees its warmest weather in July, when daytime highs average around 32°C, and its coolest in December (around 8°C).
Annual precipitation totals roughly 390mm — May is typically the wettest month (~58mm) and January the driest (~12mm).
Rainfall is spread fairly evenly through the year, so no single season is dramatically wetter than the rest.
🟧 avg daytime high · 🟦 dashed: avg nighttime low · bars: monthly rainfall
Daily forecast highs vs the 30-year normal — last 61 days
Each bar is one day: orange above normal, blue below.
| Month | High / Low | Rainfall | Travel rating |
|---|---|---|---|
| January | 8° / -8°C | 12mm | 🤔 Fair |
| February | 9° / -7°C | 14mm | 🤔 Fair |
| March | 14° / -3°C | 28mm | 👍 Good |
| April | 17° / 1°C | 43mm | 👍 Good |
| May | 22° / 6°C | 58mm | 🌟 Great |
| June | 29° / 12°C | 43mm | 👍 Good |
| July | 32° / 15°C | 54mm | 👍 Good |
| August | 31° / 14°C | 47mm | 👍 Good |
| September | 27° / 9°C | 38mm | 🌟 Great |
| October | 19° / 2°C | 25mm | 🌟 Great |
| November | 13° / -4°C | 18mm | 👍 Good |
| December | 8° / -8°C | 12mm | 🤔 Fair |
January in Denver is chilly, with average daytime highs around 8°C (46°F) and nighttime lows near -8°C (18°F). Expect roughly 12mm of precipitation spread over about 4 rainy days, and rain is rare.
🎒 What to pack — jacket or coat · long-sleeve layers
February in Denver is chilly, with average daytime highs around 9°C (47°F) and nighttime lows near -7°C (19°F). Expect roughly 14mm of precipitation spread over about 4 rainy days, and rain is rare.
🎒 What to pack — jacket or coat · long-sleeve layers
March in Denver is chilly, with average daytime highs around 14°C (56°F) and nighttime lows near -3°C (27°F). Expect roughly 28mm of precipitation spread over about 4 rainy days, with little rainfall.
🎒 What to pack — jacket or coat · long-sleeve layers
April in Denver is mild, with average daytime highs around 17°C (63°F) and nighttime lows near 1°C (34°F). Expect roughly 43mm of precipitation spread over about 6 rainy days, with little rainfall.
🎒 What to pack — light jacket · layers for cool evenings
May in Denver is pleasantly warm, with average daytime highs around 22°C (72°F) and nighttime lows near 6°C (43°F). Expect roughly 58mm of precipitation spread over about 8 rainy days, with little rainfall.
🎒 What to pack — light layers · comfortable walking shoes
June in Denver is warm, with average daytime highs around 29°C (84°F) and nighttime lows near 12°C (53°F). Expect roughly 43mm of precipitation spread over about 6 rainy days, with little rainfall.
🎒 What to pack — light summer clothing · sunscreen and sunglasses
July in Denver is hot, with average daytime highs around 32°C (90°F) and nighttime lows near 15°C (59°F). Expect roughly 54mm of precipitation spread over about 6 rainy days, with little rainfall.
🎒 What to pack — breathable summer clothing · sunscreen, hat and sunglasses · refillable water bottle
August in Denver is hot, with average daytime highs around 31°C (88°F) and nighttime lows near 14°C (57°F). Expect roughly 47mm of precipitation spread over about 6 rainy days, with little rainfall.
🎒 What to pack — breathable summer clothing · sunscreen, hat and sunglasses · refillable water bottle
September in Denver is warm, with average daytime highs around 27°C (80°F) and nighttime lows near 9°C (48°F). Expect roughly 38mm of precipitation spread over about 5 rainy days, with little rainfall.
🎒 What to pack — light summer clothing · sunscreen and sunglasses
October in Denver is pleasantly warm, with average daytime highs around 19°C (67°F) and nighttime lows near 2°C (36°F). Expect roughly 25mm of precipitation spread over about 4 rainy days, with little rainfall.
🎒 What to pack — light layers · comfortable walking shoes
November in Denver is chilly, with average daytime highs around 13°C (55°F) and nighttime lows near -4°C (26°F). Expect roughly 18mm of precipitation spread over about 4 rainy days, and rain is rare.
🎒 What to pack — jacket or coat · long-sleeve layers
December in Denver is cold, with average daytime highs around 8°C (46°F) and nighttime lows near -8°C (18°F). Expect roughly 12mm of precipitation spread over about 3 rainy days, and rain is rare.
🎒 What to pack — warm coat · sweaters and layers · scarf