Beltsville, Maryland Weather
Cicadas claim the afternoon. Day 15 of summer. Read this microseason across nine climate regions →
Beltsville weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Showers39%0.14″100°80°—
- SundayJul 5Heavy Rain53%0.46″96°75°-4°
- MondayJul 6Drizzle79%0.01″86°74°-10°
- TuesdayJul 7Thunderstorm79%0.04″78°71°-8°
- WednesdayJul 8Light Drizzle37%0.02″78°68°0°
- ThursdayJul 9Overcast13%—94°68°+16°
- FridayJul 10Light Drizzle42%—97°74°+3°
AQI 96 (Moderate), driven by PM2.5. AQI flat over the last 6 hours (within ±4 points). PM2.5 at 13.0 µg/m³, PM10 at 13.5 µg/m³ — typical background levels with no transport signature.
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 49 now. With UV 0.0 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 8 around 1 PM.
- Present
- AQI 49
- UV peak
- 0.0 at 1 PM
- Sky at peak
- partly cloudy
- Projected peak
- AQI 8
PM × Wind × Precip
PM2.5 at 13.0 µg/m³, PM10 at 13.5 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.96
- Wind
- light
- Recent rain
- 1h in last 6h
- Pattern
- background
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).








































If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 11:24 PM
- Moonset
- 11:17 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Beltsville at a glance
- Today vs. normal: 8°F above the seasonal normal for this latitude
- Last frost: April 10 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 20705
16-Day Forecast — Beltsville
- Sat100°80°39%
- Sun96°75°53%
- Mon86°74°79%
- Tue78°71°79%
- Wed78°68°37%
- Thu94°68°13%
- Fri97°74°42%
- Sat85°70°36%
- Sun80°69°22%
- Mon86°64°20%
- Tue91°65°17%
- Wed91°68°33%
- Thu90°68°37%
- Fri90°70°42%
- Sat91°71°44%
- Sun90°69°46%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 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 — Beltsville
SPC has placed Beltsville in the Slight Risk category for severe thunderstorms today.
- TODAYSLGTSlight Risk
- TOMORROWSLGTSlight Risk
- DAY 3TSTMGeneral Thunderstorms
Scattered severe storms possible. A few tornadoes, hail, and damaging wind gusts possible.
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.
Microseason · July 1–5
Cicadas claim the afternoon
Annual cicada buzz begins, peaking in the heat of the day.
Day 186 of 365 · Wedge 37 of 72
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
The year in Beltsville tops out in July (~78°F) and dips lowest in January (~32°F), with August wettest at 4.2 inches and October driest at 2.6 inches.
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 32° | 3.3″ | 13 |
| February | 35° | 2.8″ | 12 |
| March | 44° | 3.4″ | 15 |
| April | 55° | 3.7″ | 17 |
| May | 63° | 3.5″ | 18 |
| June | 72° | 3.9″ | 17 |
| July | 78° | 3.2″ | 17 |
| August | 77° | 4.2″ | 18 |
| September | 70° | 3.4″ | 14 |
| October | 59° | 2.6″ | 11 |
| November | 46° | 3.6″ | 12 |
| December | 37° | 3.9″ | 14 |
Regional context
Beltsville swings from 32°F in January to 78°F in July (46°F) per NOAA NCEI 1991-2020 normals; precipitation in Beltsville runs about 41.5 inches on roughly 175 measurable days.
No season owns Beltsville's rain: August reaches 4.2 inches across 17.8 days and October keeps 2.6 inches on 11.1, an even spread through Beltsville's year. That even rhythm groups Beltsville with places like Calverton, MD, Konterra, MD and Hillandale, MD.
Beltsville reaches its last hard frost near mid-April; that is the cue for peas, lettuce, spinach, and radishes. Heat-demanding starts go out a fortnight on in Beltsville, after the soil warms and cold snaps clear. Frost returns to Beltsville near mid-November, ending the tender-crop season. A creek-bottom lot in Beltsville can lag Beltsville's last frost 7-10 days behind a south slope.
Similar climates: Calverton, MD, Konterra, MD, Hillandale, MD, College Park, MD, Berwyn Heights, MD.
Frequently asked
- When does it freeze in Beltsville?
- In Beltsville, expect the last spring frost near mid-April; Beltsville's first autumn frost comes around mid-November.
- What is the rainy season in Beltsville?
- August is the wettest month in Beltsville, about 4.2 inches on average; the year totals roughly 42 inches.
- What is the warmest month in Beltsville?
- On average July tops the year in Beltsville at about 78°F.
- What is the coldest month in Beltsville?
- The coldest stretch in Beltsville falls in January, around 32°F on average.
- When can I start a vegetable garden in Beltsville?
- Around mid-April, start frost-hardy crops in Beltsville; tomatoes and basil belong a fortnight later.
- How many rainy days does Beltsville get?
- Beltsville averages about 175 days with measurable rain or snow each year.
- What hardiness zone is Beltsville?
- Since January in Beltsville averages 32°F, Beltsville's USDA zone follows that floor — confirm it by ZIP.
- What is the 10-day forecast for Beltsville?
- Beltsville's extended outlook — daily high and low temperatures and precipitation chances for each upcoming day — is in the daily forecast above.
- Will it rain this week in Beltsville?
- See this week's day-by-day rain chances for Beltsville in the daily forecast above, and the next 24 hours in the hourly chart.
- What is the weather like right now in Beltsville?
- Current conditions for Beltsville and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
- How often is the Beltsville forecast updated?
- The Beltsville forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
- When are sunrise and sunset in Beltsville?
- Today's sunrise and sunset times for Beltsville are in the Almanac section above, along with civil dawn, civil dusk, and day length. Day length is longest near the summer solstice and shortest near the winter solstice.
- How accurate is the weather forecast for Beltsville?
- The next few days in Beltsville's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.
Climate
The warm-summer humid continental climate of Beltsville, Maryland carries typical Januarys near 32°F and Julys around 78°F — 46°F of seasonal travel.
In a typical year Beltsville records about 42 inches of precipitation on around 175 days.
From 39.0°N, Beltsville sees a 46°F seasonal swing that governs Beltsville's planting and frost windows.
ZIP codes in Beltsville
- 20705
- 20740
- 20697
- 20704