Trinidad, Colorado Weather
Heat hardens the dust. Day 77 of spring. Read this microseason across nine climate regions →
Trinidad weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 3Overcast32%—77°56°—
- ThursdayJun 4Overcast——88°54°+11°
- FridayJun 5Overcast——90°61°+2°
- SaturdayJun 6Light Drizzle18%—86°61°-4°
- SundayJun 7Overcast——90°59°+4°
- MondayJun 8Overcast——92°63°+2°
- TuesdayJun 9Overcast10%—92°65°0°
Ozone at AQI 34 now. AQI up 6 over the last 6 hours (gradual rise). With UV 0.0 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 6 by mid-afternoon.
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 34 now. With UV 0.0 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 6 by mid-afternoon.
- Present
- AQI 34
- UV peak
- 0.0 at 1 PM
- Sky at peak
- partly cloudy
- Projected peak
- AQI 6
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
- 5:19 AM
- Moonset
- 3:11 PM
- In sign
- ♑︎ Capricorn
Heat hardens the dust
Trinidad at a glance
- Today vs. normal: 16°F below the seasonal normal for this latitude
- Last frost: March 30 (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
Peak growing season
As of June 4, the growing season is at its peak — frost is months away. Continue succession-planting beans and summer squash. Start fall brassicas (broccoli, cabbage, kale) from seed indoors for transplanting in late summer.
SPC Convective Outlook
Storm Prediction Center — Trinidad
SPC has placed Trinidad 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
Trinidad's warmest month is July (~74°F mean) and its coldest is December (~35°F). Rainfall peaks in July (2.6 inches) and bottoms out in February (0.5 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 36° | 0.5″ | 2 |
| February | 38° | 0.5″ | 2 |
| March | 45° | 1.1″ | 3 |
| April | 52° | 1.4″ | 3 |
| May | 61° | 1.5″ | 4 |
| June | 70° | 1.3″ | 4 |
| July | 74° | 2.6″ | 6 |
| August | 72° | 2.3″ | 6 |
| September | 66° | 1.3″ | 3 |
| October | 55° | 1.2″ | 3 |
| November | 43° | 0.6″ | 2 |
| December | 35° | 0.5″ | 2 |
Regional context
Trinidad's baseline climate, derived from NOAA NCEI 1991-2020 normals at the nearest reporting station, swings from a January mean of 36°F to a July mean of 74°F — a 39°F seasonal arc typical of the mid-latitude bands. Annual precipitation runs about 14.9 inches spread across roughly 39 days with measurable rain or snow each year.
Precipitation runs summer-dominant here: July averages 2.6 inches across 6.0 days with measurable rain, driven mostly by warm-season storms and thunderstorm activity, while February drops to just 0.5 inches across 1.7 rainy days under drier cool-season air. That summer-storm-driven distribution puts Trinidad in a cohort with places like Jansen, CO, Starkville, CO and El Moro, CO, all of which depend on warm-season convective activity for the bulk of their annual moisture.
The frost-sensitive growing window opens around mid-April, when overnight lows reliably clear freezing for cool-season crops like peas, lettuce, spinach, and radishes. Warm-soil crops — tomatoes, peppers, eggplant — wait until soil temperatures reach the mid-50s°F, usually two weeks past the last-frost date. The window closes around mid-November, when overnight lows resume dipping below freezing and frost-tender plants need protection or harvest. These dates represent 30-year central tendencies; actual year-to-year variation can shift either bookend by 7-14 days, and local microclimate features within Trinidad — cold-air drainage on calm clear nights, slope aspect, distance from any nearby lake or river — can push the practical frost window earlier or later than the regional average.
Similar climates: Jansen, CO, Starkville, CO, El Moro, CO, Cokedale, CO, Hoehne, CO.
Frequently asked
- When does it freeze in Trinidad?
- Trinidad's last spring frost typically falls around mid-April, and the first fall frost arrives around mid-November.
- What is the rainy season in Trinidad?
- July is the wettest month with about 2.6 inches of rain on average; the city receives roughly 15 inches annually.
- What is the warmest month in Trinidad?
- July is typically warmest, averaging about 74°F.
- What is the coldest month in Trinidad?
- December is typically coldest, averaging about 35°F.
- When can I start a vegetable garden in Trinidad?
- 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 Trinidad get?
- Trinidad averages about 39 rainy days per year.
- What hardiness zone is Trinidad?
- Trinidad'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
Trinidad, Colorado sits in a hot desert climate zone. January means hover near 36°F while July averages 74°F — a 39°F seasonal swing.
Across the year, Trinidad receives about 15 inches of precipitation spread over roughly 39 rainy days.
The rhythm of the year is set by latitude (37.2°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.