Saint Petersburg, Russia Weather
Saint Petersburg hourly forecast: next 24 hours
Today's high of 64°F (18°C) is about 4°F (2°C) above the typical September high of 60°F (16°C).
Current conditions in detail
Saint Petersburg weather tomorrow (Thursday, September 17)
Tomorrow in Saint Petersburg looks patchy rain nearby, with a high of 62° and an overnight low of 55°. There is a 72% chance of rain - plan accordingly. Winds top out near 12 mph, and the UV index reaches 2 (low).
Saint Petersburg 14-day forecast
About the weather in Saint Petersburg
Seasons are the whole story in Saint Petersburg. The gap between an average July and an average January is 24°C - warm summers and cold, often snowy winters - which in practice means 71°F (22°C) afternoons at one end of the calendar and 26°F (-3°C) at the other.
Saint Petersburg weather: quick facts
- Hottest month: July - highs near 71°F (22°C)
- Coldest month: January - highs near 26°F (-3°C)
- Decade extremes (2015-2024): 94°F (34°C) high · -25°F (-31°C) low
- Wettest month: August (14 rainy days) · Sunniest: June (14.6 h sun/day)
- Climate type: humid continental
- Annual swing: 24°C between the average warmest and coolest month · day to night: 6°C
- Snow: about 39 days a year
- Months with freezing average lows: 6
- Average humidity: 80%
Temperatures through the year
July is the warm end of the year, averaging 71°F (22°C) by day and 59°F (15°C) overnight. January is the coolest month, with highs of 26°F (-3°C) and lows near 18°F (-8°C). August is the wettest month at 4.3 inches (110 mm) over 14 days; March is the driest.
Rain, sun and snow
Days and nights are about 6°C apart on average - narrower than all but 8% of the 3496 cities in our dataset. Between the average July and the average January lie 24°C, a wider spread than roughly 77% of the cities we track. Sunshine averages 7.2 hours a day over the year - duller than all but 3% of the 3496 cities in our dataset, peaking in June at 14.6 hours. Snow falls on roughly 39 days a year, mostly October through April. The gridded 2015-2024 daily record for this location tops out at 94°F (34°C) and bottoms at -25°F (-31°C) - decade extremes, not all-time station records.
Season by season
Spring (March through May)
Spring in Saint Petersburg stays firmly cold, with daytime highs averaging 47°F (8°C) and nights around 33°F (1°C); rain falls on around 32 of the 90 days, plus about 8 snowy days.
Summer (June through August)
Summer in Saint Petersburg is pleasantly warm, with daytime highs averaging 70°F (21°C) and nights around 57°F (14°C); rain falls on around 41 of the 90 days. Daylight is generous - around 12.8 hours of sun a day.
Fall (September through November)
Through fall, Saint Petersburg is brisk and cold: 48°F (9°C) by day, 40°F (4°C) after dark, and rain falls on around 39 of the 90 days, plus about 5 snowy days.
Winter (December through February)
Winter brings deep cold here - highs near 29°F (-2°C), nights near 21°F (-6°C), and rain falls on around 41 of the 90 days, plus about 27 snowy days. Sun is scarce, averaging 1.7 hours a day. Wind sharpens cold like this considerably; pair the forecast winds with the wind speed converter to judge exposed conditions.
Average temperatures in Saint Petersburg by month
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 26° | 18° | 14 | 1.9 in | 1.3 h/day | 87% |
| February | 29° | 20° | 12 | 1.8 in | 2.9 h/day | 86% |
| March | 36° | 24° | 10 | 1.6 in | 6.6 h/day | 81% |
| April | 46° | 32° | 12 | 2.1 in | 9.4 h/day | 76% |
| May | 59° | 44° | 10 | 1.8 in | 12.8 h/day | 68% |
| June | 69° | 55° | 10 | 2.2 in | 14.6 h/day | 68% |
| July | 71° | 59° | 16 | 3.7 in | 12.8 h/day | 75% |
| August | 69° | 57° | 14 | 4.3 in | 11.1 h/day | 78% |
| September | 60° | 50° | 12 | 2.5 in | 8.1 h/day | 81% |
| October | 47° | 39° | 14 | 2.8 in | 4.8 h/day | 85% |
| November | 37° | 31° | 13 | 2.2 in | 1.6 h/day | 88% |
| December | 31° | 24° | 15 | 2.2 in | 0.9 h/day | 88% |