Pocatello weather in May: Pocatello, Idaho: normal highs, lows, rain and records for May
Pocatello in May has a normal high of 69°F and a normal low of 40°F, a daily mean of 54°F, rising from 63°F on the 1st to 73°F by the 31st. Measurable precipitation falls on 9 days in a normal May, 1.40 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 20°C and low of 4°C, 36 mm of precipitation and 1 cm of snow in May.
- NOAA stationPocatello Regional Airport
- Station IDUSW00024156
- Location42.92°N 112.57°W
- Elevation4,478 ft (1,365 m)
- Population58,231
- Jan 34° 17°
- Feb 39° 20°
- Mar 51° 28°
- Apr 59° 33°
- May 69° 40°
- Jun 79° 46°
- Jul 89° 52°
- Aug 88° 51°
- Sep 77° 42°
- Oct 62° 33°
- Nov 46° 24°
- Dec 34° 17°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Pocatello in May?
The normal high is 69°F and the normal low 40°F, for a daily mean of 54.2°F. May is 8.5°F warmer than April and 8.0°F cooler than June. May is the 5th warmest month of the year in Pocatello and the wettest. Across the month the normal high rises 10°F, from 63°F on May 1 to 73°F on May 31. From one year to the next May's mean temperature typically moves about 2.7°F either way (NOAA's standard deviation), so roughly two Mays in three average between 52°F and 57°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 30%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| May 1 | 63°F | 36°F | 30% | 14% |
| May 8 | 66°F | 38°F | 30% | 14% |
| May 15 | 69°F | 40°F | 30% | 14% |
| May 22 | 71°F | 41°F | 30% | 14% |
| May 31 | 73°F | 43°F | 28% | 13% |
Every day of May: normal high, low and chance of precipitation (warmest afternoon May 31, coldest night May 1)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| May 1 | 63°F | 36°F | 30% | 14% | 14 h |
| May 2 | 64°F | 36°F | 30% | 14% | 14 h 10 min |
| May 3 | 64°F | 36°F | 30% | 14% | 14 h 10 min |
| May 4 | 65°F | 37°F | 30% | 14% | 14 h 10 min |
| May 5 | 65°F | 37°F | 30% | 14% | 14 h 10 min |
| May 6 | 65°F | 37°F | 30% | 14% | 14 h 20 min |
| May 7 | 66°F | 37°F | 30% | 14% | 14 h 20 min |
| May 8 | 66°F | 38°F | 30% | 14% | 14 h 20 min |
| May 9 | 66°F | 38°F | 30% | 14% | 14 h 20 min |
| May 10 | 67°F | 38°F | 30% | 14% | 14 h 30 min |
| May 11 | 67°F | 39°F | 30% | 14% | 14 h 30 min |
| May 12 | 68°F | 39°F | 30% | 14% | 14 h 30 min |
| May 13 | 68°F | 39°F | 30% | 14% | 14 h 30 min |
| May 14 | 68°F | 39°F | 30% | 14% | 14 h 30 min |
| May 15 | 69°F | 40°F | 30% | 14% | 14 h 40 min |
| May 16 | 69°F | 40°F | 30% | 14% | 14 h 40 min |
| May 17 | 69°F | 40°F | 30% | 14% | 14 h 40 min |
| May 18 | 70°F | 40°F | 30% | 14% | 14 h 40 min |
| May 19 | 70°F | 41°F | 30% | 14% | 14 h 40 min |
| May 20 | 70°F | 41°F | 30% | 14% | 14 h 50 min |
| May 21 | 71°F | 41°F | 30% | 14% | 14 h 50 min |
| May 22 | 71°F | 41°F | 30% | 14% | 14 h 50 min |
| May 23 | 71°F | 42°F | 30% | 14% | 14 h 50 min |
| May 24 | 71°F | 42°F | 29% | 14% | 14 h 50 min |
| May 25 | 72°F | 42°F | 29% | 14% | 15 h |
| May 26 | 72°F | 42°F | 29% | 14% | 15 h |
| May 27 | 72°F | 42°F | 29% | 14% | 15 h |
| May 28 | 73°F | 43°F | 29% | 13% | 15 h |
| May 29 | 73°F | 43°F | 28% | 13% | 15 h |
| May 30 | 73°F | 43°F | 28% | 13% | 15 h |
| May 31 | 73°F | 43°F | 28% | 13% | 15 h 10 min |
- Normal high
- 69°FMay average
- Normal low
- 40°FMay average
- Precipitation
- 1.40 inmonth total
- Days with precipitation
- 90.01 inch or more
- Snowfall
- 0.4 inmonth total
- Nights at 32°F or colder
- 4
- Daylight
- 14 h to 15 h 10 minMay 1 to May 31
- Days at 70°F or more
- 15
- Days at 80°F or more
- 5
- Sunshine
- 77%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00024156; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain or snow in Pocatello in May?
On a given May day the chance of 0.01 inch or more is 29% on average, highest around May 1 (30%). In all, 1.40 in falls on 9 days of a normal May.
In a normal May in Pocatello, 4 nights fall to freezing and snowfall averages 0.4 inches.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00024156.
How humid and windy is Pocatello in May?
At 3 p.m. the normal temperature is 71°F with 31% relative humidity and a dew point of 39°F; at 6 a.m. it is 48°F with 74% humidity. The wind averages 9.7 mph, most often from the west-southwest in the afternoon. A dew point under 50°F feels dry.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 48°F | 40°F | 74% | 6.4 mph | 61% |
| 9 a.m. | 60°F | 42°F | 52% | 9.9 mph | 62% |
| noon | 68°F | 41°F | 38% | 12.0 mph | 53% |
| 3 p.m. | 71°F | 39°F | 31% | 13.2 mph | 42% |
| 6 p.m. | 68°F | 39°F | 34% | 11.9 mph | 50% |
| 9 p.m. | 58°F | 41°F | 53% | 8.9 mph | 65% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00024156. Hourly normals exist only for NOAA's first-order stations; a dash where NOAA publishes no value for that hour (the sky at some hours).
What are the records for May in Pocatello?
The warmest May temperature on Pocatello's official record (since 1939) is 97°F, on May 28, 2003; the coldest is 20°F, on May 1, 1972. The wettest May brought 3.29 in (1980); the snowiest, 5.5 inches (1983).
The May mean against the 1991-2020 normal of 54.2°F: 2021 54.4°F (+0.2), 2022 50.5°F (−3.7), 2023 57.8°F (+3.6), 2024 50.5°F (−3.7), 2025 57.0°F (+2.8), 2026 56.9°F (+2.7). 4 of 6 ran warmer than normal.
| May | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 54.4°F | +0.2°F | 0.57 in |
| 2022 | 50.5°F | −3.7°F | 1.93 in |
| 2023 | 57.8°F | +3.6°F | 2.02 in |
| 2024 | 50.5°F | −3.7°F | 1.63 in |
| 2025 | 57.0°F | +2.8°F | 1.82 in |
| 2026 | 56.9°F | +2.7°F | 0.18 in |
Source: records: ACIS, NWS threaded record PIHthr; recent months: ACIS, station USW00024156. Records and recent months use complete months only.
How does May in Pocatello compare across Idaho?
Across the 85 places PlainClimate covers in Idaho, May normal highs run from 50°F in Mullan to 79°F in Glenns Ferry; Pocatello's is 69°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.