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Spruce Grove · April 2027

Northern lights in Spruce Grove in April 2027

Answer

April gives Spruce Grove 8.6 hours of civil night on the 15th, the 8th darkest of its 12 months, under 69% mean cloud. 28% of April days since 1996 reached Kp 4, enough for the oval edge to reach Spruce Grove.
8.5 h
civil night, average night
SunCalc for 53.53, -113.92; NASA POWER; GFZ Kp

April against the rest of the year

April cloud at Spruce Grove averages 69% in NASA POWER's 2001 to 2020 record, 2 points cloudier than its yearly mean. July is Spruce Grove's clearest month at 56%. By civil night times clear sky, April scores 2.7 hours at Spruce Grove, 9th of 12. Edmonton, 30 km away, averages the same 69%.

Civil night at Spruce Grove starts April at 9 h 37 min and reaches 7 h 27 min by April 30, 2.2 hours shorter. SWPC's 10 PM to 2 AM window is fully dark on every night. True astronomical darkness, the sun 18 degrees down, lasts 5.1 hours on the 15th.

April night by night

April opens toward a new moon on Apr 6, with full moon on Apr 20, in America/Edmonton dates. Spruce Grove gets 137 hours of civil night with the moon below the horizon across the month. The best of them for moon-free darkness inside 10 PM to 2 AM: Apr 1 (4 h), Apr 2 (4 h), Apr 3 (4 h).

  1. 1

    21% lit

    9.0 h

  2. 2

    14% lit

    9.1 h

  3. 3

    8% lit

    9.3 h

  4. 4

    3% lit

    9.4 h

  5. 5

    1% lit

    9.3 h

  6. 6

    0% lit

    9.3 h

  7. 7

    2% lit

    8.2 h

  8. 8

    6% lit

    6.7 h

  9. 9

    13% lit

    5.2 h

  10. 10

    21% lit

    3.9 h

  11. 11

    31% lit

    2.9 h

  12. 12

    42% lit

    2.1 h

  13. 13

    53% lit

    1.6 h

  14. 14

    65% lit

    1.2 h

  15. 15

    75% lit

    0.9 h

  16. 16

    84% lit

    0.7 h

  17. 17

    91% lit

    0.4 h

  18. 18

    97% lit

    0.2 h

  19. 19

    99% lit

    0.0 h

  20. 20

    100% lit

    0.0 h

  21. 21

    98% lit

    1.2 h

  22. 22

    94% lit

    2.5 h

  23. 23

    89% lit

    3.6 h

  24. 24

    82% lit

    4.5 h

  25. 25

    74% lit

    5.2 h

  26. 26

    65% lit

    5.7 h

  27. 27

    56% lit

    6.0 h

  28. 28

    46% lit

    6.2 h

  29. 29

    37% lit

    6.3 h

  30. 30

    28% lit

    6.5 h

Each cell is the night that starts on that date. Hours are civil-dark time with the moon below the horizon; the green rule scales with them. Green outline: new moon. Bone outline: full moon.

Activity in past Aprils

Spruce Grove needs Kp 4 for the average oval edge to sit overhead. 251 of the 900 April days from 1996 to 2025 (28%) reached it in the GFZ Potsdam record, 4th of 12 months; storm days with Kp 5 or more made up 12%. Spruce Grove sits at 59.9 degrees geomagnetic. By SWPC's rule the average oval edge is overhead at Kp 4, and aurora is usually visible on the northern horizon at G1 (Kp 5) or less.

April across Canada

Spruce Grove ranks 16th in Canada for civil night on April 15, behind Sydney at 9.3 hours. Coming from March (10.9 hours at Spruce Grove), April loses darkness, and May brings shorter nights (6.4 hours on the 15th).

Civil night on April 15 and April cloud, month-page towns in Canada
TownCivil nightCloud
Sydney9.3 h73%
Québec9.2 h67%
Greater Sudbury9.2 h64%
Trois-Rivières9.2 h66%
St. John's9.2 h77%
Saguenay9.1 h70%
Thunder Bay9.1 h69%
Lethbridge9.0 h68%
Winnipeg8.9 h61%
Regina8.9 h67%
Kelowna8.9 h71%
Kamloops8.9 h72%
Spruce Grove8.6 h69%

Darkness and moon, every night

Spruce Grove, April 2027: each night from local noon to the next noon
NightCivilAstronomicalMoon-free darkMoon-free, 10 PM to 2 AMMoon lit
Thu Apr 19 h 37 min6 h 35 min8 h 59 min4 h21%
Fri Apr 29 h 33 min6 h 29 min9 h 8 min4 h14%
Sat Apr 39 h 28 min6 h 24 min9 h 16 min4 h8%
Sun Apr 49 h 24 min6 h 18 min9 h 24 min4 h3%
Mon Apr 59 h 19 min6 h 12 min9 h 19 min4 h1%
Tue Apr 69 h 15 min6 h 6 min9 h 15 min4 h0%
Wed Apr 79 h 10 min6 h8 h 12 min4 h2%
Thu Apr 89 h 6 min5 h 54 min6 h 43 min2 h 33 min6%
Fri Apr 99 h 1 min5 h 47 min5 h 14 min1 h 7 min13%
Sat Apr 108 h 57 min5 h 41 min3 h 54 min0 min21%
Sun Apr 118 h 52 min5 h 35 min2 h 51 min0 min31%
Mon Apr 128 h 48 min5 h 28 min2 h 5 min0 min42%
Tue Apr 138 h 43 min5 h 22 min1 h 34 min0 min53%
Wed Apr 148 h 39 min5 h 15 min1 h 11 min0 min65%
Thu Apr 158 h 34 min5 h 8 min54 min0 min75%
Fri Apr 168 h 30 min5 h 1 min39 min0 min84%
Sat Apr 178 h 25 min4 h 54 min26 min0 min91%
Sun Apr 188 h 21 min4 h 47 min12 min0 min97%
Mon Apr 198 h 16 min4 h 40 min0 min0 min99%
Tue Apr 208 h 12 min4 h 33 min0 min0 min100%
Wed Apr 218 h 7 min4 h 25 min1 h 13 min43 min98%
Thu Apr 228 h 3 min4 h 18 min2 h 31 min2 h 3 min94%
Fri Apr 237 h 58 min4 h 10 min3 h 39 min3 h 13 min89%
Sat Apr 247 h 54 min4 h 2 min4 h 33 min4 h82%
Sun Apr 257 h 49 min3 h 54 min5 h 12 min4 h74%
Mon Apr 267 h 45 min3 h 45 min5 h 39 min4 h65%
Tue Apr 277 h 41 min3 h 37 min5 h 57 min4 h56%
Wed Apr 287 h 36 min3 h 28 min6 h 10 min4 h46%
Thu Apr 297 h 32 min3 h 19 min6 h 20 min4 h37%
Fri Apr 307 h 27 min3 h 9 min6 h 28 min4 h28%
Moon lit: SunCalc illuminated fraction at the middle of the 10 PM to 2 AM window.

Questions

Can you see the northern lights in Spruce Grove in April?
On dark, clear nights with enough activity. 30 of 30 nights at Spruce Grove have civil darkness, and 28% of past April days reached Kp 4.
How dark is Spruce Grove in April?
Spruce Grove averages 8.5 hours of civil night a night in April 2027, from 9 h 37 min on the 1st to 7 h 27 min on the last night.
How cloudy is Spruce Grove in April?
NASA POWER's 2001 to 2020 climatology gives Spruce Grove's 1 degree cell 69% mean cloud in April, against 67% for the whole year. It is an all-hours average, not a forecast.
What is the best night in April 2027 for aurora in Spruce Grove?
By darkness and moon alone, Apr 1, with 4 h of moon-free darkness inside 10 PM to 2 AM at Spruce Grove. Activity on that date will only be known hours ahead.
Is April or May better in Spruce Grove?
By civil night times the clear share, April scores 2.7 hours at Spruce Grove and May 2.4. April comes out ahead.

Sources and verification

Quoted figures last checked against their sources on 2026-09-30; next review 2026-12-31. Computed figures come from SunCalc and the IGRF-14 dipole as described in the methodology. Every quote is listed in the sources ledger.