Maryland Climate – June 2026 Update
Top 5 Cities: Baltimore, Columbia, Germantown, Silver Spring, and Waldorf
This month in numbers
Maryland experienced its 10th warmest June on record, with an average temperature of 23°C, a notable 1.5°C above the 1961–1990 baseline. Maximum temperatures for June were the 8th highest on record, reaching 29.22°C, which is 1.7°C above average. Looking at the broader picture, the April–June 2026 period saw the 3rd highest maximum temperatures on record, averaging 24.57°C, a significant 1.9°C above the baseline. Globally, June 2026 was the 3rd warmest June for land temperatures, and the April–June period ranked as the 2nd warmest for global land temperatures. [cite: 3-Month: Max Temp (Apr–Jun 2026): 24.57°C · anomaly +1.9°C vs 1961–1990 baseline · RANKED 3rd of 77 years on record · all-time record: 25.44°C (Apr–Jun 2010) · ⬆️ TOP 5 - MUST MENTION, Global Month: Global Land Temp (Jun 2026): 16.46°C · anomaly +1°C vs 1961–1990 baseline · RANKED 3rd of 86 years on record · all-time record: 16.66°C (Jun 2025) · ⬆️ TOP 5 - MUST MENTION, Global 3‑Month: Global Land Temp (Apr–Jun 2026): 15.74°C · anomaly +1°C vs 1961–1990 baseline · RANKED 2nd of 86 years on record · all-time record: 15.87°C (Apr–Jun 2025) · ⬆️ TOP 5 - MUST MENTION, Month: Avg Temp (Jun 2026): 23°C · anomaly +1.5°C vs 1961–1990 baseline · RANKED 10th of 77 years on record · all-time record: 24.56°C (Jun 2010), Month: Max Temp (Jun 2026): 29.22°C · anomaly +1.7°C vs 1961–1990 baseline · RANKED 8th of 77 years on record · all-time record: 30.44°C (Jun 2010)]
What changed
The past three months (April–June) have been significantly warmer than average in Maryland, with maximum temperatures ranking as the 3rd highest on record. This trend aligns with the national picture, as the contiguous United States also experienced above-average temperatures in June, with a +1.6°C anomaly. Maryland's 1-month anomaly of +1.54°C places it 90th out of 234 regions globally, and it was slightly warmer than its NOAA Northeast US climate region average. Precipitation for the April–June period was notably low, ranking 70th of 77 years on record, with a deficit of 25.8 mm compared to the baseline.
What’s driving change?
The persistent warmth in Maryland is consistent with the broader trend of . The region also experienced an unusual concentration of extreme weather events recently. There have been four wildfire events between late June and mid-July, representing 100% of the annual total for Maryland over the past 12 months, which is an unusual concentration for the region. [cite: 4× wildfire [Green] (2026-06-27 to 2026-07-13)] Additionally, one flood event occurred between May and July, also representing 100% of the annual total for the past 12 months. [cite: 1× flood [Green] (2026-05-19 to 2026-07-12)] These events highlight the vulnerability of the region to both dry and wet extremes. More information on these events can be found at Extreme Weather tracker.
Looking ahead
The NOAA Climate Prediction Center's outlook for July, August, and September 2026 suggests a continued lean towards above-normal temperatures for Maryland, with an increased chance of above-normal precipitation for the mid-Atlantic region.
Generated by Gemini from climate data and web sources
At a Glance
Temperature – Average
Climate Map – USA
Source: NOAA Climate at a Glance — US states & climate regions (tavg, pcp). Anomalies are vs the 1961–1990 baseline (temperature) or 1991–2020 (rainfall). See methodology.
Year-on-Year Trends
The 4byo Climate Helix – Maryland
Data: NOAA National Centers for Environmental Information. Baseline: first 30 yrs on record. Recent: last 10 yrs on record.
Maryland – Monthly Temperature – All Years
Data: NOAA National Centers for Environmental Information. Baseline: first 30 yrs on record. Recent: last 10 yrs on record.
Records – Maryland
NOAA National Centers for Environmental Information - Anomalies vs 1901-2000 mean
Shifting Seasons
Warm / cold seasonsKöppen Dfa · ContinentalHow spring and autumn have shifted in Maryland. Spring is defined as the date monthly temperatures first rise above the long-term annual mean (12.0°C, from 1950–1979); autumn is the date they fall back below it. Temperature swings 23.8°C peak-to-peak across the year - a classic four-seasons rhythm.
Baseline vs recent monthly temperature climatology. Biggest warming: Feb (+3.1°C).
Data: NOAA National Centers for Environmental Information. Baseline: first 30 yrs on record. Recent: last 10 yrs on record.
Rainfall & Precipitation
Rainfall & Rain Days – Totals
Emissions & Energy
Explore
Explore Climate Data
Data Sources
Data Sources for Maryland
Every figure on this page is sourced from official, openly published climate datasets. Anomalies are calculated against the 1961–1990 baseline (temperature) and 1991–2020 (rainfall, sunshine, frost) - see the Methodology & Sources page for the complete dataset list and update calendar.
FAQs
FAQs
How is the climate in Maryland changing?
Maryland is warming in line with the rest of the world. The page above shows the latest monthly temperature anomaly versus the 1961-1990 baseline, the long-term annual trend, and the region's rank in the historical record. The headline panel also shows the long-term trend rate per decade and the warmest and coolest years on file.
Where does the climate data for Maryland come from?
Climate data for Maryland comes from NOAA Climate at a Glance (temperature and precipitation), refreshed every month, when the upstream temperature and rainfall data are refreshed.
What is the climate baseline used on this page?
Anomalies on this page are calculated against the 1961-1990 climatological baseline, which is the standard reference period used by the Met Office, NOAA, IPCC and most national climate services. Some panels also show the source-native 1901-2000 (NOAA) or 1991-2020 (WMO) baselines for verification. See Methodology & Sources for the full reference.
Which areas does the Maryland climate data cover?
The Maryland climate profile covers Baltimore, Columbia, Germantown, Silver Spring and surrounding areas. Maryland climate data from NOAA Climate at a Glance
How often is the Maryland climate update refreshed?
The Maryland climate update is refreshed monthly, typically a few days after the previous month closes and the upstream provider (Met Office HadUK-Grid, NOAA Climate at a Glance, Copernicus ERA5 or the Global Carbon Project) publishes its update. See the Climate Rankings for cross-region comparisons.