Delta Junction weather in May: Delta Junction, Alaska: normal highs, lows, rain and records for May
Delta Junction in May has a normal high of 59°F and a normal low of 38°F, a daily mean of 49°F, rising from 54°F on the 1st to 64°F by the 31st. Measurable precipitation falls on 8 days in a normal May, 0.76 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 15°C and low of 3°C, 19 mm of precipitation in May.
- NOAA stationBig Delta Airport
- Station IDUSW00026415
- Location63.99°N 145.72°W
- Elevation1,277 ft (389 m)
- Population985
- Jan 6° -8°
- Feb 16° -1°
- Mar 25° 4°
- Apr 44° 24°
- May 59° 38°
- Jun 68° 49°
- Jul 70° 52°
- Aug 65° 47°
- Sep 53° 36°
- Oct 33° 20°
- Nov 15° 1°
- Dec 9° -5°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Delta Junction in May?
The normal high is 59°F and the normal low 38°F, for a daily mean of 48.5°F. May is 14.6°F warmer than April and 10.0°F cooler than June. May is the 4th warmest month of the year in Delta Junction and the 5th wettest. Across the month the normal high rises 10°F, from 54°F on May 1 to 64°F on May 31. From one year to the next May's mean temperature typically moves about 3.6°F either way (NOAA's standard deviation), so roughly two Mays in three average between 45°F and 52°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 33%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| May 1 | 54°F | 33°F | 19% | 5% |
| May 8 | 56°F | 36°F | 22% | 6% |
| May 15 | 58°F | 38°F | 25% | 8% |
| May 22 | 61°F | 40°F | 29% | 10% |
| May 31 | 64°F | 43°F | 33% | 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 | 54°F | 33°F | 19% | 5% | 16 h 40 min |
| May 2 | 54°F | 34°F | 19% | 5% | 16 h 50 min |
| May 3 | 55°F | 34°F | 20% | 5% | 17 h |
| May 4 | 55°F | 34°F | 20% | 5% | 17 h |
| May 5 | 55°F | 35°F | 20% | 5% | 17 h 10 min |
| May 6 | 56°F | 35°F | 21% | 6% | 17 h 10 min |
| May 7 | 56°F | 35°F | 21% | 6% | 17 h 20 min |
| May 8 | 56°F | 36°F | 22% | 6% | 17 h 30 min |
| May 9 | 57°F | 36°F | 22% | 6% | 17 h 30 min |
| May 10 | 57°F | 36°F | 23% | 7% | 17 h 40 min |
| May 11 | 57°F | 37°F | 23% | 7% | 17 h 50 min |
| May 12 | 58°F | 37°F | 23% | 7% | 17 h 50 min |
| May 13 | 58°F | 37°F | 24% | 7% | 18 h |
| May 14 | 58°F | 38°F | 24% | 8% | 18 h 10 min |
| May 15 | 58°F | 38°F | 25% | 8% | 18 h 10 min |
| May 16 | 59°F | 38°F | 25% | 8% | 18 h 20 min |
| May 17 | 59°F | 38°F | 26% | 8% | 18 h 30 min |
| May 18 | 59°F | 39°F | 26% | 9% | 18 h 30 min |
| May 19 | 60°F | 39°F | 27% | 9% | 18 h 40 min |
| May 20 | 60°F | 39°F | 27% | 9% | 18 h 50 min |
| May 21 | 60°F | 40°F | 28% | 10% | 18 h 50 min |
| May 22 | 61°F | 40°F | 29% | 10% | 19 h |
| May 23 | 61°F | 40°F | 29% | 10% | 19 h |
| May 24 | 61°F | 41°F | 30% | 11% | 19 h 10 min |
| May 25 | 62°F | 41°F | 30% | 11% | 19 h 20 min |
| May 26 | 62°F | 41°F | 31% | 11% | 19 h 20 min |
| May 27 | 62°F | 42°F | 31% | 12% | 19 h 30 min |
| May 28 | 63°F | 42°F | 32% | 12% | 19 h 30 min |
| May 29 | 63°F | 43°F | 32% | 13% | 19 h 40 min |
| May 30 | 63°F | 43°F | 33% | 13% | 19 h 50 min |
| May 31 | 64°F | 43°F | 33% | 13% | 19 h 50 min |
- Normal high
- 59°FMay average
- Normal low
- 38°FMay average
- Precipitation
- 0.76 inmonth total
- Days with precipitation
- 80.01 inch or more
- Nights at 32°F or colder
- 7
- Daylight
- 16 h 40 min to 19 h 50 minMay 1 to May 31
- Days at 70°F or more
- 4
- Sunshine
- 72%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00026415; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Delta Junction in May?
On a given May day the chance of 0.01 inch or more is 26% on average, highest around May 31 (33%). In all, 0.76 in falls on 8 days of a normal May.
In a normal May in Delta Junction, 7 nights fall to freezing.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00026415.
How humid and windy is Delta Junction in May?
At 3 p.m. the normal temperature is 62°F with 35% relative humidity and a dew point of 34°F; at 6 a.m. it is 48°F with 62% humidity. The wind averages 8.0 mph, most often from the south-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 | 36°F | 62% | 6.2 mph | – |
| 9 a.m. | 55°F | 36°F | 50% | 7.6 mph | 14% |
| noon | 60°F | 35°F | 39% | 8.3 mph | – |
| 3 p.m. | 62°F | 34°F | 35% | 9.7 mph | 6% |
| 6 p.m. | 61°F | 34°F | 37% | 9.5 mph | – |
| 9 p.m. | 57°F | 37°F | 46% | 8.2 mph | – |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00026415. 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 Delta Junction?
The warmest May temperature on Delta Junction's official record (since 1917) is 90°F, on May 29, 1947; the coldest is −1°F, on May 4, 1945. The wettest May brought 3.07 in (1988); the snowiest, 10.9 inches (1989).
The May mean against the 1991-2020 normal of 48.5°F: 2021 47.1°F (−1.4), 2022 45.5°F (−3.0), 2023 48.9°F (+0.4), 2024 47.2°F (−1.3), 2026 47.4°F (−1.1). 1 of 5 ran warmer than normal.
| May | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 47.1°F | −1.4°F | 1.83 in |
| 2022 | 45.5°F | −3.0°F | 0.51 in |
| 2023 | 48.9°F | +0.4°F | 1.90 in |
| 2024 | 47.2°F | −1.3°F | 1.73 in |
| 2026 | 47.4°F | −1.1°F | 0.87 in |
Source: records: ACIS, NWS threaded record BIGthr; recent months: ACIS, station USW00026415. Records and recent months use complete months only.
How does May in Delta Junction compare across Alaska?
Across the 85 places PlainClimate covers in Alaska, May normal highs run from 27°F in Utqiaġvik to 65°F in Two Rivers; Delta Junction's is 59°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.