October scores 61/100 for outdoor ceremonies: moderate rain risk (9 wet days, 76mm), 20°C afternoons cooling to about 14°C for the reception, and 10.9 hours of daylight for the photography schedule. March is the month to avoid at 25/100.
October outdoor ceremony score: 61/100
Climate normals for Philadelphia rescored on wedding-specific weighting. Once your date falls inside the 14-day window the live forecast on this page takes over.
Last updated: · Live forecast data refreshes hourly.
| Best wedding month | October — 61/100 |
| Second choice | May — 59/100 |
| Month to avoid | March — 25/100 |
| Rain risk in the best month | Moderate — rain on about 9 days |
| Guest comfort | 93/100 at 20°C |
| Reception temperature | ≈ 14°C after sunset in October |
| Photo light | 10h of sun across a 10.9h day |
| Months scoring 65+ | 0 of 12 |
October keeps seated guests at 20°C in the afternoon and around 14°C after sunset — the closest Philadelphia gets to a ceremony that needs neither shade structures nor patio heaters.
Rain falls on roughly 9 days in October (moderate risk, 76mm). Book a covered backup you would genuinely be happy to use.
October gives 10.9 hours of daylight and about 10 hours of direct sun per day, so a late-afternoon ceremony puts portraits inside golden hour rather than after it.
March scores 25/100 for weddings in Philadelphia: 8°C highs, 95mm of rain and 3°C evenings make a fully outdoor plan fragile.
Scored on rain risk, guest comfort, evening temperature and photographic light — deliberately different weighting from the travel score.
| Month | Wedding score | Rain risk | Afternoon | Evening | Guest comfort | Photo light |
|---|---|---|---|---|---|---|
| January | 25/100 | Moderate (9 days) | 4°C | -1°C | 39/100 | 24/100 |
| February | 28/100 | Moderate (8 days) | 4°C | -1°C | 39/100 | 29/100 |
| March | 25/100 | Moderate (11 days) | 8°C | 3°C | 52/100 | 22/100 |
| April | 43/100 | Moderate (10 days) | 14°C | 9°C | 73/100 | 35/100 |
| May | 59/100 | Moderate (10 days) | 20°C | 14°C | 93/100 | 66/100 |
| June | 59/100 | Moderate (10 days) | 26°C | 20°C | 83/100 | 74/100 |
| July | 40/100 | Moderate (11 days) | 30°C | 24°C | 66/100 | 27/100 |
| August | 39/100 | Moderate (11 days) | 30°C | 24°C | 66/100 | 25/100 |
| September | 48/100 | Moderate (11 days) | 26°C | 20°C | 83/100 | 22/100 |
| October | 61/100 | Moderate (9 days) | 20°C | 14°C | 93/100 | 62/100 |
| November | 51/100 | Moderate (8 days) | 14°C | 9°C | 73/100 | 55/100 |
| December | 32/100 | Moderate (9 days) | 8°C | 3°C | 52/100 | 23/100 |
Wedding weather is scored differently from travel weather: seated guests in formalwear tolerate a narrower band than sightseers, and the ceremony hour matters more than the daily average. Each month in Philadelphia is scored 0–100 on the weighting below.
| Factor | Weight | What it measures |
|---|---|---|
| Dry conditions | 38% | Share of days with measurable rain — the single factor most likely to force a backup plan. |
| Guest comfort | 27% | Distance from a 22°C daytime ideal, with an extra penalty for humid heat above 24°C. |
| Evening temperature | 20% | Modelled reception-hour temperature against an 18°C ideal for an outdoor evening. |
| Photo light | 15% | Sunshine hours and daylight length, which set the length and quality of the golden hour window. |
Based on long-run climate averages rather than a forecast. Plan the ceremony around the golden hour — see golden hour times for Philadelphia linked below.
October, at 61/100. It combines moderate rain risk with 20°C afternoons and roughly 14°C evenings, which is the most forgiving combination Philadelphia offers for seated guests.
March scores 25/100: 8°C highs, 95mm of rain over about 11 days and 3°C evenings make a fully outdoor plan fragile.
In October rain falls on roughly 9 of 30 days, so the single-day probability is about 30%. In March that rises to about 37%.
Yes. Even in the best month, rain risk in Philadelphia is moderate, so book covered space you would genuinely be happy to use rather than treating it as a late add-on.
October gives 10.9 hours of daylight and about 10 hours of direct sun. Put portraits in the final 60–90 minutes of daylight so they land inside golden hour rather than after it.