October 31 is generally a great time to visit Washington DC. While there is a slight chance of rain (22%), showers are usually brief. Expect comfortable 17°C weather. Washington DC is currently in its most popular travel window, meaning vibrant crowds and premium pricing.
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Essential Travel Info for Washington DC
Currency
USD
$ United States dollar
Language
English
Driving
Right side
Connect
The D.C. government operates a network o...
Safety
Moderate Safety
GPI: 2.44
Washington DC Weather Forecast for October 31
"Mild & Comfortable. Expect average highs of 17°C. 22% chance of rain."
What to Wear in Washington DC in October
Based on historical data for October 31, Washington DC typically experiences temperatures between 7.7°C and 17°C. We recommend packing light jacket, long pants to stay comfortable. Trends suggest it will stay mostly dry (22% rain probability), but checking the forecast before heading out is always wise.
Complete Packing Guide
Weekly breakdown & essential items for Washington DC
Smart Suitcase
- Light Jacket
- Long Pants
Average High
17°C
Daytime Peak
Average Low
7.7°C
Nighttime Low
Feels Like
17°C
🌤️ Feels accurate
Rain Chance
22%
Avg 1.9mm if it rains
Cloud Cover
51%
Overcast
Pressure
1018 hPa
High volatility
Washington DC Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
✓ Weather is generally predictable, but pack for minor variations. A light backup layer is recommended.
Sun Exposure
UV Index & Safety Guide
Protection Needed
SPF 15 for extended outdoor time
Type I-II
🔴 53 min to burn
Type III-IV
🟡 80 min to burn
Type V-VI
🟢 133 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
11.9°C
Pleasant
Heat Stress
Low
No heat warning
😊 Best outdoor time:
Any time during daylight hours
Travel & Logistics Insights
Local Calendar
Business Day
Standard hours in United States
Flight Traffic
High
90/100 pressure index
Health Advisory
Healthy
Routine only • View Details →
Landing Slots
~421
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Washington DC
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
06:35
☀️ Noon
11:52
🌇 Sunset
17:10
⏱️ Daylight
10h 35m
Wind Speed
14.5 km/h
Gentle breeze
Sunshine
7.3 hrs
Direct Sun (Cloud-free)
Humidity
72%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for Washington DC
Smart Flight Estimator
Airport-to-Airport Logistics
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Add your home location in settings to see airport details.
Travel Health & Safety in Washington DC
Travel Comfort Index
Real-time tourism conditions
Weather Quality
☀️ Excellent
Tourist Crowds
🟡 Busy
Price Level
💰💰 Moderate
Health & Wellbeing
Meteo-Health Forecast
Rapid pressure changes detected. High risk for meteosensitive people.
Weather unlikely to affect joint pain.
Fish are active due to pressure changes.
Air quality is excellent. Perfect for outdoor activities.
Regional Safety Profile
Seismic Activity
Zero seismic activity detected in 30 years.
"According to 30YearWeather's analysis of 30 years of NASA satellite data, Washington DC on October 31 averages 17°C with a 22% precipitation probability. Wedding/Outdoor Event Score: 88/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Washington DC Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Better Alternatives Nearby
Consider these dates within ±7 days
October 24
18.2°C • 17% rain
Score
94
October 25
18.1°C • 18% rain
Score
93
November 2
16.5°C • 12% rain
Score
93
💡 Moving your event by a few days could significantly improve weather conditions
Compare Other Cities
Same date (October 31) in other destinations
🌍 Explore the same date in different destinations around the world
📍 Is Washington DC Worth Visiting on October 31?
Planning a trip to Washington DC on October 31? Our historical weather analysis based on 30 years of NASA satellite data shows that this time of year is characterized by pleasant mild weather averaging 17°C with a 22% historical precipitation risk.
✈️ Travel Logistics: Approximately 421 landing slots available daily during this period, indicating peak tourist activity.
📊 Historical Extremes: The hottest October 31 recorded in the last 30 years saw temperatures hit 26.1°C in 2024, while the coldest dropped to 3.5°C in 2023.