Siena Weather in March
Average highs run from 11°C on March 1 to 15°C on March 31, and lows from 2°C to 5°C. Normal precipitation for the month is 53 mm over about 9 wet days.
March day by day
The normal high and low for each date, in °C.
- Normal low
- Normal high
- Reanalysis extreme high
- Reanalysis extreme low
March at a glance
- Average high
- 14°C
- Average low
- 3°C
- Precipitation
- 53 mm
- Reanalysis high
- 23°CMar 28, 2012
- Reanalysis low
- -9°CMar 2, 2005
- Daylight
- 11 h 12 min to 12 h 41 min
- Cloud cover
- 62%
- Humidity
- 81%
- Dew point
- 5°C
- Wind
- 12.2 km/h
Every day of the month
A wet day has at least 1 mm of precipitation in the reanalysis.
| Date | Normal high | Normal low | Reanalysis high | Reanalysis low | Chance wet |
|---|---|---|---|---|---|
| Mar 1 | 11°C | 2°C | 20°C 2012 | -6°C 2005 | 35% |
| Mar 2 | 12°C | 2°C | 19°C 2008 | -9°C 2005 | 34% |
| Mar 3 | 12°C | 2°C | 17°C 2008 | -4°C 2005 | 33% |
| Mar 4 | 12°C | 2°C | 19°C 2007 | -3°C 2005 | 33% |
| Mar 5 | 12°C | 2°C | 19°C 2002 | -4°C 1993 | 32% |
| Mar 6 | 12°C | 3°C | 17°C 2007 | -4°C 2010 | 31% |
| Mar 7 | 13°C | 3°C | 18°C 2002 | -4°C 2005 | 30% |
| Mar 8 | 13°C | 3°C | 16°C 1991 | -4°C 2011 | 29% |
| Mar 9 | 13°C | 3°C | 18°C 1994 | -4°C 2011 | 28% |
| Mar 10 | 13°C | 3°C | 20°C 1994 | -2°C 1996 | 26% |
| Mar 11 | 13°C | 3°C | 21°C 1994 | -3°C 1998 | 24% |
| Mar 12 | 13°C | 3°C | 19°C 2012 | -2°C 1996 | 24% |
| Mar 13 | 14°C | 3°C | 19°C 2002 | -2°C 2010 | 22% |
| Mar 14 | 14°C | 3°C | 20°C 1999 | -2°C 2010 | 20% |
| Mar 15 | 14°C | 3°C | 19°C 1999 | -3°C 2006 | 19% |
| Mar 16 | 14°C | 3°C | 19°C 2019 | -3°C 2013 | 19% |
| Mar 17 | 14°C | 4°C | 20°C 2004 | -1°C 2013 | 20% |
| Mar 18 | 14°C | 4°C | 21°C 2004 | -2°C 2006 | 21% |
| Mar 19 | 14°C | 4°C | 20°C 2020 | -1°C 1999 | 22% |
| Mar 20 | 14°C | 4°C | 20°C 1993 | -2°C 1999 | 23% |
| Mar 21 | 14°C | 4°C | 22°C 2002 | -3°C 2000 | 24% |
| Mar 22 | 14°C | 4°C | 22°C 2012 | -3°C 1998 | 25% |
| Mar 23 | 14°C | 4°C | 21°C 2019 | -3°C 2020 | 25% |
| Mar 24 | 15°C | 4°C | 23°C 2019 | -3°C 2020 | 25% |
| Mar 25 | 15°C | 4°C | 21°C 2017 | -2°C 1998 | 26% |
| Mar 26 | 15°C | 4°C | 21°C 2012 | -3°C 1998 | 27% |
| Mar 27 | 15°C | 4°C | 21°C 2012 | -3°C 1998 | 28% |
| Mar 28 | 15°C | 4°C | 23°C 2012 | -4°C 1993 | 28% |
| Mar 29 | 15°C | 4°C | 22°C 2012 | -2°C 1993 | 30% |
| Mar 30 | 15°C | 5°C | 22°C 2017 | -2°C 1993 | 31% |
| Mar 31 | 15°C | 5°C | 22°C 2017 | -2°C 1995 | 31% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT+1).
- March 1
- sunrise 6:51 AM, sunset 6:03 PM
- March 31
- sunrise 6:59 AM, sunset 7:40 PM
Other months
Sources
Cloud, humidity, wind and sunshine, and temperature and precipitation: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.