Siena climate

Siena Weather in June

NASA POWER reanalysis for the half-degree grid cell around Siena, 1991-2020; a grid cell is an area average and can differ from a thermometer in town by several degrees

Average highs run from 25°C on June 1 to 31°C on June 30, and lows from 13°C to 17°C. Normal precipitation for the month is 42 mm over about 9 wet days.

June day by day

The normal high and low for each date, in °C.

Normal daily high and low temperature at Siena, in °C, with the record for each date.010203040151015202530
  • Normal low
  • Normal high
  • Reanalysis extreme high
  • Reanalysis extreme low

June at a glance

Average high
28°C
Average low
15°C
Precipitation
42 mm
Reanalysis high
39°CJun 27, 2019
Reanalysis low
7°CJun 10, 2005
Daylight
15 h 11 min to 15 h 21 min
Cloud cover
50%
Humidity
62%
Dew point
13°C
Wind
9.7 km/h

Every day of the month

A wet day has at least 1 mm of precipitation in the reanalysis.

DateNormal highNormal lowReanalysis highReanalysis lowChance wet
Jun 125°C13°C33°C 19998°C 201330%
Jun 225°C13°C33°C 19998°C 200631%
Jun 326°C13°C33°C 20008°C 200632%
Jun 426°C13°C32°C 19987°C 200132%
Jun 526°C13°C34°C 19988°C 200632%
Jun 626°C14°C33°C 20159°C 199232%
Jun 726°C14°C32°C 201510°C 200633%
Jun 826°C14°C34°C 20148°C 200633%
Jun 926°C14°C34°C 20148°C 200533%
Jun 1027°C14°C35°C 20147°C 200533%
Jun 1127°C14°C35°C 200310°C 200532%
Jun 1227°C14°C37°C 20039°C 200630%
Jun 1327°C15°C36°C 200310°C 200130%
Jun 1428°C15°C37°C 20039°C 199528%
Jun 1528°C15°C36°C 20038°C 200826%
Jun 1628°C15°C34°C 201712°C 199625%
Jun 1728°C15°C36°C 200212°C 201424%
Jun 1828°C15°C35°C 200211°C 199823%
Jun 1929°C15°C37°C 200211°C 199122%
Jun 2029°C15°C36°C 200210°C 199120%
Jun 2129°C15°C36°C 200210°C 201020%
Jun 2229°C16°C37°C 20029°C 201019%
Jun 2330°C16°C39°C 200210°C 199619%
Jun 2430°C16°C36°C 20028°C 199518%
Jun 2530°C16°C36°C 20068°C 199517%
Jun 2630°C16°C36°C 201910°C 199616%
Jun 2730°C16°C39°C 201910°C 199616%
Jun 2831°C17°C37°C 201912°C 199216%
Jun 2931°C17°C36°C 20199°C 201316%
Jun 3031°C17°C37°C 201910°C 199116%

Chance of rain

The chance of at least 1 mm of precipitation in the reanalysis on each date at Siena, in percent.0102030401102030
  • Chance of a wet day

Sunrise and sunset

Times for 2026, local time (GMT+2).

June 1
sunrise 5:37 AM, sunset 8:48 PM
June 30
sunrise 5:38 AM, sunset 8:59 PM

Every day of June: sun and moon

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.