Flintstone, Maryland Weather
Fireflies rise from the lawn. Day 78 of spring. Read this microseason across nine climate regions →
Flintstone weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 4Clear——83°51°—
- FridayJun 5Overcast——85°61°+2°
- SaturdayJun 6Rain55%0.05″86°63°+1°
- SundayJun 7Light Drizzle55%—83°65°-3°
- MondayJun 8Overcast——77°55°-6°
- TuesdayJun 9Overcast——82°56°+5°
- WednesdayJun 10Overcast19%—79°58°-3°
AQI 96 (Moderate), driven by Ozone. AQI up 19 in the last 6 hours — air quality is degrading. Ozone at AQI 68 now. With UV 0.0 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 12 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 68 now. With UV 0.0 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 12 by mid-afternoon.
- Present
- AQI 68
- UV peak
- 0.0 at 1 PM
- Sky at peak
- partly cloudy
- Projected peak
- AQI 12
PM × Wind × Precip
PM2.5 at 5.0 µg/m³ (AQI 28) with a 1.00 fine-to-coarse ratio and 3 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 1.00
- Wind
- calm
- 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).
The higher the clouds, the finer the weather.
- Moonrise
- 4:13 AM
- Moonset
- 2:20 PM
- In sign
- ♒︎ Aquarius
Fireflies rise from the lawn
Flintstone at a glance
- Today vs. normal: 6°F below the seasonal normal for this latitude
- Last frost: April 14 (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 5, 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 — Flintstone
SPC has placed Flintstone in the Marginal Risk category for severe thunderstorms day after tomorrow.
- TODAYNONENo severe risk
- TOMORROWNONENo severe risk
- DAY 3MRGLMarginal Risk
Isolated severe storms possible. Limited threat for hail or damaging wind.
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
Flintstone's warmest month is July (~76°F mean) and its coldest is January (~31°F). Rainfall peaks in May (4.2 inches) and bottoms out in February (2.4 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 31° | 2.8″ | 6 |
| February | 34° | 2.4″ | 6 |
| March | 42° | 3.4″ | 7 |
| April | 54° | 3.4″ | 8 |
| May | 63° | 4.2″ | 9 |
| June | 71° | 3.9″ | 8 |
| July | 76° | 3.7″ | 7 |
| August | 74° | 3.4″ | 7 |
| September | 67° | 3.5″ | 6 |
| October | 55° | 2.8″ | 6 |
| November | 44° | 2.6″ | 5 |
| December | 35° | 3.0″ | 6 |
Regional context
Flintstone's baseline climate, derived from NOAA NCEI 1991-2020 normals at the nearest reporting station, swings from a January mean of 31°F to a July mean of 76°F — a 45°F seasonal arc typical of the mid-latitude bands. Annual precipitation runs about 39.2 inches spread across roughly 79 days with measurable rain or snow each year.
Rainfall stays relatively even across the calendar: May tops out at 4.2 inches across 8.6 days with measurable rain, and February settles around 2.4 inches across 5.5 rainy days — a comparatively narrow seasonal range. That even-rainfall rhythm puts Flintstone alongside places like Pleasant Grove, MD, Bowmans Addition, MD and Cumberland, MD — places without a single dominant storm season, where moisture arrives steadily across the calendar.
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. Heat-loving transplants like tomatoes, peppers, and squash generally hold off for another 10-14 days to clear the last spring frost risk window. The window closes around mid-November, when overnight lows resume dipping below freezing and frost-tender plants need protection or harvest. The dates above are 1991-2020 normals; in a given year either bookend can move 1-2 weeks either direction. Within Flintstone, low-lying parcels along drainage features typically lose 4-7°F of overnight low temperature versus the bench positions on calm clear nights, which shifts the working last-frost date by a week or more.
Similar climates: Pleasant Grove, MD, Bowmans Addition, MD, Cumberland, MD, Ellerslie, MD, Little Orleans, MD.
Frequently asked
- When does it freeze in Flintstone?
- Flintstone's last spring frost typically falls around mid-April, and the first fall frost arrives around mid-November.
- What is the rainy season in Flintstone?
- May is the wettest month with about 4.2 inches of rain on average; the city receives roughly 39 inches annually.
- What is the warmest month in Flintstone?
- July is typically warmest, averaging about 76°F.
- What is the coldest month in Flintstone?
- January is typically coldest, averaging about 31°F.
- When can I start a vegetable garden in Flintstone?
- 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 Flintstone get?
- Flintstone averages about 79 rainy days per year.
- What hardiness zone is Flintstone?
- Flintstone'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
Flintstone, Maryland sits in a warm-summer humid continental climate zone. January means hover near 31°F while July averages 76°F — a 45°F seasonal swing.
Across the year, Flintstone receives about 39 inches of precipitation spread over roughly 79 rainy days.
The rhythm of the year is set by latitude (39.7°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.