Weather in Riverdale Hills, MD
Riverdale Hills, Sunday, 9 August, 13:11
Overcast. Feels like 100°. High 91°, low 73°.
Monthly outlook for Riverdale Hills, MD: average high 87.2°, average low 68.8°. That is 1.7° above the climate normal for August. Precipitation is expected on 3 days (about 0.5 inches), against a normal of 6 days and 2.1 inches. The warmest day looks like 10 August (94.6°), the coolest 15 August (60.1°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 86.5° | 84.9° | +0.9° |
| 19 August – 28 August | 88.4° | 83.5° | +2.7° |
| 29 August – 7 September | at normal | 82.4° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — New Carrollton (2 mi).
0
Riverdale Hills, Monday, 10 August
Light rain. High 95°, low 76°.
0.04Riverdale Hills, Tuesday, 11 August
Light rain. High 92°, low 71°.
0.01Riverdale Hills, Wednesday, 12 August
Light rain. High 89°, low 74°.
0
Riverdale Hills, Thursday, 13 August
Partly cloudy. High 90°, low 75°.
0.11Riverdale Hills, Friday, 14 August
Light rain. High 74°, low 62°.
0Riverdale Hills, Saturday, 15 August
Overcast. High 81°, low 60°.
0.01Riverdale Hills, Sunday, 16 August
Light rain. High 79°, low 61°.
0Riverdale Hills, Monday, 17 August
Overcast. High 86°, low 68°.
0Riverdale Hills, Tuesday, 18 August
Partly cloudy. High 89°, low 67°.
0.33Riverdale Hills, Wednesday, 19 August
Rain. High 87°, low 69°.
0
Riverdale Hills, Thursday, 20 August
Clear. High 89°, low 68°.
0Riverdale Hills, Friday, 21 August
Overcast. High 85°, low 68°.
0Riverdale Hills, Saturday, 22 August
Clear. High 93°, low 70°.
0
Riverdale Hills, Sunday, 23 August
Mostly clear. High 91°, low 74°.
0Riverdale Hills, Monday, 24 August
Clear. High 86°, low 66°.
0.07Riverdale Hills, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.05Riverdale Hills, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.13
Riverdale Hills, Thursday, 27 August
Climate normal for this date — 60-year average.
0.16Riverdale Hills, Friday, 28 August
Climate normal for this date — 60-year average.
0.13Riverdale Hills, Saturday, 29 August
Climate normal for this date — 60-year average.
0.06Riverdale Hills, Sunday, 30 August
Climate normal for this date — 60-year average.
0.07Riverdale Hills, Monday, 31 August
Climate normal for this date — 60-year average.
0.13Riverdale Hills, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.11Riverdale Hills, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.11Riverdale Hills, Thursday, 3 September
Climate normal for this date — 60-year average.
0.09Riverdale Hills, Friday, 4 September
Climate normal for this date — 60-year average.
0.13Riverdale Hills, Saturday, 5 September
Climate normal for this date — 60-year average.
0.25Riverdale Hills, Sunday, 6 September
Climate normal for this date — 60-year average.
0.07Riverdale Hills, Monday, 7 September
Climate normal for this date — 60-year average.
About the monthly outlook
How accurate is a 30-day forecast?
The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Riverdale Hills, MD are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.
What does "above normal" mean?
We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.
Where do the 66-year records come from?
They are real temperature extremes recorded in Riverdale Hills, MD since 1960: the highest and lowest reading for each calendar date, with the year it happened.
How often is it updated?
The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.
Sun and moon today
Weather history
83°Weather in Annapolis, MD90°Weather in Atlanta, GA89°Weather in Augusta, ME85°Weather in Austin, TX91°Weather in Baton Rouge, LA92°Weather in Bismarck, ND75°Weather in Boise, ID77°Weather in Boston, MA88°Weather in Carson City, NV82°Weather in Charleston, WV87°Weather in Charlotte Amalie, VI84°Weather in Cheyenne, WY87°Weather in Columbia, SC89°Weather in Columbus, OH84°Weather in Concord, NH87°Weather in Denver, CO91°Weather in Des Moines, IA86°Weather in Dover, DE88°Weather in Frankfort, KY87°Weather in Harrisburg, PA86°Weather in Hartford, CT87°Weather in Helena, MT77°Weather in Honolulu, HI76°Weather in Indianapolis, IN85°Weather in Jackson, MS96°Weather in Jefferson City, MO87°Weather in Juneau, AK48°Weather in Lansing, MI81°Weather in Lincoln, NE95°Weather in Little Rock, AR88°Weather in Madison, WI68°Weather in Montgomery, AL90°Weather in Montpelier, VT81°Weather in Nashville, TN86°Weather in Oklahoma City, OK93°Weather in Olympia, WA59°Weather in Phoenix, AZ98°Weather in Pierre, SD76°Weather in Providence, RI89°Weather in Raleigh, NC90°Weather in Richmond, VA92°Weather in Sacramento, CA80°Weather in Salem, OR65°Weather in Salt Lake City, UT91°Weather in San Juan, PR88°Weather in Santa Fe, NM80°Weather in Springfield, IL87°Weather in St. Paul, MN78°Weather in Tallahassee, FL90°Weather in Topeka, KS92°Weather in Trenton, NJ88°Weather in Washington, DC91°86°Weather in Bowmans Mill, MD86°Weather in Bradley Farms, MD88°Weather in Bradley Hills, MD88°Weather in Bradley Hills Grove, MD89°Weather in Bradley Woods, MD89°Weather in Bradmoor, MD89°Weather in Bradshaw, MD89°Weather in Brady, MD87°Weather in Breezy Point, MD91°Weather in Brentland, MD90°Weather in Brice, MD90°Weather in Briddletown, MD89°Weather in Bridgeport, MD87°Weather in Bridlewood, MD89°Weather in Broad Run, MD88°Weather in Broadmoor, MD89°Weather in Broadwater, MD91°Weather in Brookdale, MD90°Weather in Brookfield, MD91°