May weather in Monticello, UT
The average temperature in Monticello in May is 53.2°F (39.3°F–67.1°F). Average precipitation: 0.89 inches.
May is a spring month in Monticello, and is warmer than the annual average of 47.3°F. Daily temperatures swing about 27.8°F between overnight low and afternoon high. Daylight averages about 14h 3m. For travel, May is a comfortable month to visit.
Avg High
67.1°F
Avg Low
39.3°F
Precipitation
0.89 in
Daylight
14h 3m
May records in Monticello
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 77.0°F (2013) | 28.0°F (2016) | 0.19 in (2019) |
| May 2 | 78.1°F (2021) | 28.0°F (2013) | 0.37 in (2016) |
| May 3 | 75.0°F (2015) | 30.9°F (2013) | 0.40 in (2018) |
| May 4 | 75.0°F (2014) | 26.1°F (2022) | 0.09 in (2015) |
| May 5 | 73.9°F (2014) | 30.9°F (2022) | 0.12 in (2025) |
| May 6 | 78.1°F (2017) | 25.0°F (2024) | 0.66 in (2015) |
| May 7 | 79.0°F (2021) | 28.0°F (2014) | 0.20 in (2017) |
| May 8 | 78.1°F (2018) | 25.0°F (2024) | 0.10 in (2015) |
| May 9 | 82.0°F (2018) | 23.0°F (2024) | 0.10 in (2015) |
| May 10 | 84.0°F (2018) | 28.0°F (2015) | 0.36 in (2017) |
| May 11 | 81.0°F (2018) | 30.0°F (2015) | 0.15 in (2019) |
| May 12 | 75.0°F (2018) | 28.0°F (2014) | 0.23 in (2024) |
| May 13 | 77.0°F (2025) | 27.0°F (2014) | 0.00 in (2012) |
| May 14 | 79.0°F (2013) | 26.1°F (2014) | 0.00 in (2012) |
| May 15 | 81.0°F (2013) | 28.9°F (2025) | 0.08 in (2015) |
| May 16 | 82.9°F (2022) | 30.9°F (2015) | 0.65 in (2023) |
| May 17 | 79.0°F (2022) | 32.0°F (2015) | 0.24 in (2016) |
| May 18 | 81.0°F (2022) | 24.1°F (2017) | 0.67 in (2016) |
| May 19 | 78.1°F (2020) | 26.1°F (2017) | 0.19 in (2025) |
| May 20 | 79.0°F (2022) | 27.0°F (2025) | 0.31 in (2015) |
| May 21 | 75.0°F (2012) | 28.0°F (2019) | 0.07 in (2023) |
| May 22 | 80.1°F (2012) | 28.0°F (2019) | 0.55 in (2021) |
| May 23 | 81.0°F (2012) | 28.9°F (2021) | 0.72 in (2019) |
| May 24 | 79.0°F (2025) | 32.0°F (2019) | 0.31 in (2019) |
| May 25 | 79.0°F (2017) | 32.0°F (2019) | 0.38 in (2014) |
| May 26 | 77.0°F (2013) | 36.0°F (2024) | 0.22 in (2014) |
| May 27 | 82.0°F (2022) | 30.0°F (2012) | 0.07 in (2019) |
| May 28 | 82.9°F (2022) | 28.9°F (2012) | 0.07 in (2019) |
| May 29 | 82.9°F (2014) | 28.9°F (2012) | 0.08 in (2015) |
| May 30 | 82.0°F (2020) | 33.1°F (2022) | 0.00 in (2012) |
| May 31 | 82.9°F (2025) | 33.1°F (2022) | 0.43 in (2014) |