Rock Creek Park, Colorado Weather
Pikas hayfeeding in granite peaks. Day 77 of spring. Read this microseason across nine climate regions →
Rock Creek Park weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 3Light Drizzle36%0.01″73°53°—
- ThursdayJun 4Overcast10%—82°49°+9°
- FridayJun 5Overcast12%—84°67°+2°
- SaturdayJun 6Overcast23%—86°64°+2°
- SundayJun 7Overcast23%—90°60°+4°
- MondayJun 8Clear38%—87°63°-3°
- TuesdayJun 9Overcast27%—92°63°+5°
Ozone at AQI 43. AQI up 9 over the last 6 hours (gradual rise). Overcast through the UV peak window (cloud cover ~95%) — afternoon ozone should stay flat.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
Ozone × UV × Sky
Ozone at AQI 43. Overcast through the UV peak window (cloud cover ~95%) — afternoon ozone should stay flat.
- Present
- AQI 43
- UV peak
- 0.0 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 5
PM × Wind × Precip
PM2.5 at 4.6 µg/m³ (AQI 26) with a 0.64 fine-to-coarse ratio and 5 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.64
- Wind
- light
- Recent rain
- 0h in last 6h
- Pattern
- stagnant smoke
Trends
Seven days of AQI and PM2.5.
Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 5:26 AM
- Moonset
- 3:08 PM
- In sign
- ♑︎ Capricorn
Pikas hayfeeding in granite peaks
Rock Creek Park at a glance
- Today vs. normal: 16°F below the seasonal normal for this latitude
- Last frost: April 8 (climatological average for this latitude)
- Microseason: Jun 1–5
- Planting window: Harvest spring lettuce before it bolts. Sow heat-tolerant greens.
Right now in the garden
Warm-season window is open
As of June 4, the last spring frost has passed for most years. Transplant tomatoes, peppers, eggplants, basil, and cucurbits (cucumbers, squash, melons) now. Direct-sow beans and corn into warm soil.
SPC Convective Outlook
Storm Prediction Center — Rock Creek Park
SPC has placed Rock Creek Park in the General Thunderstorms category for severe thunderstorms today.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3TSTMGeneral Thunderstorms
Thunderstorms possible. Not severe, but capable of producing lightning and brief heavy rain.
Source: NOAA / NWS Storm Prediction Center categorical convective outlook. Outlooks are re-issued multiple times per day; this page reflects the most recent SPC polygons covering the city’s coordinates.
Planting calendar
| Month | Plant | Harvest |
|---|---|---|
| January | — | — |
| February | — | — |
| March | — | — |
| April | lettuce, peas, spinach, radishes | — |
| May | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash | lettuce, peas, radishes |
| June | tomatoes, peppers, beans, squash | lettuce, peas, radishes |
| July | tomatoes, peppers, beans, squash | tomatoes, beans, summer squash |
| August | — | tomatoes, beans, summer squash |
| September | fall brassicas, garlic (overwinter), carrots | tomatoes, beans, summer squash |
| October | fall brassicas, garlic (overwinter), carrots | winter squash, tomatoes (last) |
| November | — | — |
| December | — | — |
A year in weather
Rock Creek Park's warmest month is July (~72°F mean) and its coldest is December (~32°F). Rainfall peaks in July (3.1 inches) and bottoms out in December (0.2 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 32° | 0.3″ | 1 |
| February | 33° | 0.3″ | 1 |
| March | 41° | 0.8″ | 2 |
| April | 48° | 1.4″ | 4 |
| May | 57° | 2.0″ | 5 |
| June | 67° | 2.3″ | 4 |
| July | 72° | 3.1″ | 6 |
| August | 70° | 3.0″ | 6 |
| September | 63° | 1.4″ | 3 |
| October | 51° | 0.8″ | 2 |
| November | 40° | 0.4″ | 1 |
| December | 32° | 0.2″ | 1 |
Frequently asked
- When does it freeze in Rock Creek Park?
- Rock Creek Park's last spring frost typically falls around mid-April, and the first fall frost arrives around mid-November.
- What is the rainy season in Rock Creek Park?
- July is the wettest month with about 3.1 inches of rain on average; the city receives roughly 16 inches annually.
- What is the warmest month in Rock Creek Park?
- July is typically warmest, averaging about 72°F.
- What is the coldest month in Rock Creek Park?
- December is typically coldest, averaging about 32°F.
- When can I start a vegetable garden in Rock Creek Park?
- Cool-season crops (peas, lettuce) can be sown around the last spring frost (mid-April); warm-season crops (tomatoes, peppers) wait until 1–2 weeks after.
- How many rainy days does Rock Creek Park get?
- Rock Creek Park averages about 37 rainy days per year.
- What hardiness zone is Rock Creek Park?
- Rock Creek Park's USDA hardiness zone is determined by its lowest average winter temperature; check the USDA's online lookup with the city ZIP for the current zone designation.
Climate
Rock Creek Park, Colorado sits in a hot desert climate zone. January means hover near 32°F while July averages 72°F — a 41°F seasonal swing.
Across the year, Rock Creek Park receives about 16 inches of precipitation spread over roughly 37 rainy days.
The rhythm of the year is set by latitude (38.7°N), proximity to large water bodies, and elevation — all of which shape what grows here, when frost is likely, and what the weather story looks like day to day.